Home / 15,418-20,497

Finding the Third Proportional to 15,418 and 20,497

Calculator

Solution

The third proportional to 15,418 and 20,497 is: 27,249.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418 : 20,497 = 20,497 : x
  2. Step 2: Convert to fraction form
    15,418/20,497 = 20,497/x
  3. Step 3: Cross multiply
    15,418x = 20,497 × 20,497
  4. Step 4: Simplify right side
    15,418x = 420,127,009
  5. Step 5: Solve for x
    x = 420,127,009/15,418
  6. Step 6: Final answer
    x = 27,249.12

Related Problems

Find third proportional to 7,709 and 10,248.50
Half scale
Find third proportional to 30,836 and 40,994
Double scale
Find third proportional to 15,420 and 20,500
Similar ratio
Find third proportional to 23,127 and 30,745.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.