Question

The 1st , 3rd and 4th terms of a proportion are 12 , 8 and 14 respectively. Find the 2nd term.​

Answer 1

product of means= product of extremes

the proportion is- 12: x :: 8 : 14

=> 12×14 = (x)×8

x= 12×14/8

x= 21

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Answer 2

12/x=8/14

12×14=8×x

12×14/8

3×7=x

so,x=21.

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