Home / 20,337.92-28,065.01-11,385.35

Finding the Fourth Proportional to 20,337.92, 28,065.01 and 11,385.35

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Solution

The fourth proportional to 20,337.92, 28,065.01 and 11,385.35 is: 15,711.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.92 : 28,065.01 = 11,385.35 : x
  2. Step 2: Convert to fraction form
    20,337.92/28,065.01 = 11,385.35/x
  3. Step 3: Cross multiply
    20,337.92x = 28,065.01 × 11,385.35
  4. Step 4: Simplify right side
    20,337.92x = 319,529,821.28
  5. Step 5: Solve for x
    x = 319,529,821.28/20,337.92
  6. Step 6: Final answer
    x = 15,711.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.