Solving proportions

Solve the proportion.

 $\frac{10}{4}=\frac{x}{5}$  

Solve the proportion.

 $\frac{6}{10}=\frac{x}{7}$  

Solve the proportion.

 $\frac{5}{x}=\frac{3}{9}$  

Solve the proportion.

 $\frac{7}{x}=\frac{8}{7}$  

Solve the proportion.

 $\frac{4}{12}=\frac{2}{x}$  

Solve the proportion.

 $\frac{18+2x}{4}=\frac{5}{-2}$  

Solve the proportion.

 $\frac{4}{x-8}=\frac{8}{2}$  

Solve the proportion.

 $\frac{5}{6}=\frac{7x+9}{9}$  

Solve the proportion.

 $\frac{5}{22}=\frac{9-x}{44}$  

Solve the proportion.

 $\frac{5}{8}=\frac{x}{x-21}$