Question

Find the first term of a proportion whose 2nd,3rd and 4th terms are 18,40,60 respectively

Answer 1

Answer:

12

Step-by-step explanation:

according to the rule of proportion the product of the mean it's equal to the product of the extreme

let the 1st proportion be x

x:18::40:60

x*60 = 40*16

on solving the problem we get

X =12