The LCM Calculator for 4 Numbers is an online tool that determines the LCM of the given four numbers. CoolGyan’S Calculator to find the Least common multiple of 4 Numbers, makes calculations simple and interesting. Without solving and utilising our time, we can quickly get the output here.

## How to use the LCM Calculator for 4 Numbers?

Learn to use the LCM calculator here for the given four numbers.

Step 1: Mention all the four numbers, whose LCM is required, in the four input fields such as ‘Enter Number 1’, ‘Enter Number 2’, ‘Enter Number 3’, and ‘Enter Number 4’.

Step 2: Click on “Solve” button to get the result

Step 3: The LCM of given four numbers will appear in the output field ‘LCM’.

### What is LCM?

LCM or Least Common Multiple is the smallest common multiple among two or more numbers. The methods to find the LCM are:

- Listing the multiples
- Long division method
- Prime factorisation method

For example, if we have to find the LCM of 4,8,12 and 16, then using all the above three methods we can find the LCM.

**Finding LCM by listing the multiples**

Multiples of 4 = 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, **48**,…

Multiples of 8 = 8, 16, 32, 40, **48**, ..

Multiples of 12 = 12, 24, 36, **48**,..

Multiples of 16 = 16, 32, **48**,..

As we can see here, the smallest common multiple for 4,8,12 and 16 is 48.

**Finding LCM by Prime Factorisation**

4 = 2 x 2

8 = 2 x 2 x 2

12 = 2 x 2 x 3

16 = 2 x 2 x 2 x 2

By listing the prime factors we have got here most often they have occurred for any given number we get the LCM. Therefore,

LCM (4,8,12,16) = 2 x 2 x 3 x 2 x 2

**LCM by Long Division Method**

Divisor | 4 | 8 | 12 | 16 |

Divisor = 2 | 2 | 4 | 6 | 8 |

Divisor = 2 | 1 | 2 | 3 | 4 |

Divisor = 2 | 1 | 1 | 3 | 2 |

Divisor = 2 | 1 | 1 | 3 | 1 |

Divisor = 3 | 1 | 1 | 1 | 1 |

Therefore,

LCM = 2 x 2 x 2 x 2 x 3 = 48