Scale Factor of 20 and 5

What is the Scale Factor of 20 and 5? What is the Scale Factor between 20 and 5? More specifically, what is the Scale Factor from a length of 20 to a length of 5? In other words, what (Scale Factor) can you multiply by 20 to get 5 as illustrated below?:

20 × Scale Factor = 5

To solve the equation above, you simply divide both sides by 20 to get the Scale Factor alone on the left side:

(20 × Scale Factor)/20 = 5/20
Scale Factor = 5/20

We could leave the answer like that, but we have also converted the answer to its simplest fraction form and to decimal form:

Fraction answer = 1/4
Decimal answer = 0.25

You may also be interested to know that we verified that 20 × 1/4 = 5 is true, which means that our answer is correct. Also, note that since 20 is greater than 5, this is a Reduction Scale Factor.

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