X:12:18=7:8:Y

Calculate the unknown term  in the proportion
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1 Answer

X:12:18=7:8:Y

The numbers correspond to each other in order.  The x:7, the 18:y and the 12:8.

Start at 12:8 it is a fraction.

12/8 = 3/2

So, 3*7:7 and 18:18/2

21:7 and 18:9

x = 21, y = 9

by Level 2 User (1.4k points)

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