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Finding the Fourth Proportional to 18,906.92, 28,359.23 and 8,373.85

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Solution

The fourth proportional to 18,906.92, 28,359.23 and 8,373.85 is: 12,560.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.92 : 28,359.23 = 8,373.85 : x
  2. Step 2: Convert to fraction form
    18,906.92/28,359.23 = 8,373.85/x
  3. Step 3: Cross multiply
    18,906.92x = 28,359.23 × 8,373.85
  4. Step 4: Simplify right side
    18,906.92x = 237,475,872.47
  5. Step 5: Solve for x
    x = 237,475,872.47/18,906.92
  6. Step 6: Final answer
    x = 12,560.26

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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.