Home / 8,938-13,639

Finding the Third Proportional to 8,938 and 13,639

Calculator

Solution

The third proportional to 8,938 and 13,639 is: 20,812.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938 : 13,639 = 13,639 : x
  2. Step 2: Convert to fraction form
    8,938/13,639 = 13,639/x
  3. Step 3: Cross multiply
    8,938x = 13,639 × 13,639
  4. Step 4: Simplify right side
    8,938x = 186,022,321
  5. Step 5: Solve for x
    x = 186,022,321/8,938
  6. Step 6: Final answer
    x = 20,812.52

Related Problems

Find third proportional to 4,469 and 6,819.50
Half scale
Find third proportional to 17,876 and 27,278
Double scale
Find third proportional to 8,940 and 13,642
Similar ratio
Find third proportional to 13,407 and 20,458.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.