makkargarv86 makkargarv86

15-12-2020
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find the fourth proportion in 21 , 27 and 14

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aozorarose aozorarose

15-12-2020

Answer: It is 18.

Explanation:

Those 3 numbers are in proportion with another number that is uknown.

21, 27, 14, and x.

a:b::c:d = a/b::c/d

21/27=14/x

x=14*27 /21

x=18

Because of this, the fourth proportion in 21, 27 and number 14 is 18.

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