Home / 20,517.15-30,744.97-15,830.15

Finding the Fourth Proportional to 20,517.15, 30,744.97 and 15,830.15

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Solution

The fourth proportional to 20,517.15, 30,744.97 and 15,830.15 is: 23,721.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.15 : 30,744.97 = 15,830.15 : x
  2. Step 2: Convert to fraction form
    20,517.15/30,744.97 = 15,830.15/x
  3. Step 3: Cross multiply
    20,517.15x = 30,744.97 × 15,830.15
  4. Step 4: Simplify right side
    20,517.15x = 486,697,524.13
  5. Step 5: Solve for x
    x = 486,697,524.13/20,517.15
  6. Step 6: Final answer
    x = 23,721.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.