Question

the fourth proportional to 12 ,26 and 38 is_____
a 38+26
______
12
b 38×26
______
12
c 38×12
_______
26
d none of these ​

Answer 1

Question:

the fourth proportional to 12 ,26 and 38 is_____

Answer:

$let \: the \: fourth \: proportional \: be \: x \\ \\ \frac{12}{26} = \frac{38}{x } \\ = > \: x = \frac{(38 \times 26)}{12} \\ = > \: x = \frac{988}{12} \\ = > x = 82.3333 \\ = > x = 82.33$

so the correct answer is

(B)

$\frac{38 \times 26}{12}$