Home / 15,278-20,613

Finding the Third Proportional to 15,278 and 20,613

Calculator

Solution

The third proportional to 15,278 and 20,613 is: 27,810.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278 : 20,613 = 20,613 : x
  2. Step 2: Convert to fraction form
    15,278/20,613 = 20,613/x
  3. Step 3: Cross multiply
    15,278x = 20,613 × 20,613
  4. Step 4: Simplify right side
    15,278x = 424,895,769
  5. Step 5: Solve for x
    x = 424,895,769/15,278
  6. Step 6: Final answer
    x = 27,810.95

Related Problems

Find third proportional to 7,639 and 10,306.50
Half scale
Find third proportional to 30,556 and 41,226
Double scale
Find third proportional to 15,280 and 20,616
Similar ratio
Find third proportional to 22,917 and 30,919.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.