Question

(c) If second, third and fourth terms of a
proportion are 18, 10 and 20, respectively,
then find its first term.



explain it​

Answer 1

Answer : 9

Step-by-step explanation:

Product of mean terms = Product of extreme terms

i.e if x : y :: a : b , then ay = bx

Therefore let the first term be (x)

Therefore (x)(20) = (18)(10)

(x) = 180 / 20

(x) = 9

PLEASE DO MARK AS BRAINLIEST

Answer 2

Answer:

x = 9 will be the answer

hope it helps!!!!!!