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Finding the Fourth Proportional to 20,553.66, 30,789.11 and 9,444.92

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Solution

The fourth proportional to 20,553.66, 30,789.11 and 9,444.92 is: 14,148.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.66 : 30,789.11 = 9,444.92 : x
  2. Step 2: Convert to fraction form
    20,553.66/30,789.11 = 9,444.92/x
  3. Step 3: Cross multiply
    20,553.66x = 30,789.11 × 9,444.92
  4. Step 4: Simplify right side
    20,553.66x = 290,800,550.49
  5. Step 5: Solve for x
    x = 290,800,550.49/20,553.66
  6. Step 6: Final answer
    x = 14,148.36

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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.