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Finding the Fourth Proportional to 18,753.52, 28,144.13 and 8,892.83

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Solution

The fourth proportional to 18,753.52, 28,144.13 and 8,892.83 is: 13,345.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.52 : 28,144.13 = 8,892.83 : x
  2. Step 2: Convert to fraction form
    18,753.52/28,144.13 = 8,892.83/x
  3. Step 3: Cross multiply
    18,753.52x = 28,144.13 × 8,892.83
  4. Step 4: Simplify right side
    18,753.52x = 250,280,963.59
  5. Step 5: Solve for x
    x = 250,280,963.59/18,753.52
  6. Step 6: Final answer
    x = 13,345.81

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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.