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Finding the Fourth Proportional to 20,383.68, 30,553.36 and 8,545.08

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Solution

The fourth proportional to 20,383.68, 30,553.36 and 8,545.08 is: 12,808.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.68 : 30,553.36 = 8,545.08 : x
  2. Step 2: Convert to fraction form
    20,383.68/30,553.36 = 8,545.08/x
  3. Step 3: Cross multiply
    20,383.68x = 30,553.36 × 8,545.08
  4. Step 4: Simplify right side
    20,383.68x = 261,080,905.47
  5. Step 5: Solve for x
    x = 261,080,905.47/20,383.68
  6. Step 6: Final answer
    x = 12,808.33

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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.