Answer :
Answer:
[tex]\frac{ad}{b}[/tex]
Step-by-step explanation:
Given proportion:
[tex]\frac{a}{b}[/tex] = [tex]\frac{c}{d}[/tex]
To solve this problem, make c the subject of the expression.
Cross multiply;
ad = cb
Now, divide both sides by b,
[tex]\frac{ad}{b}[/tex] = [tex]\frac{cb}{b}[/tex]
b = [tex]\frac{ad}{b}[/tex]