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Finding the Fourth Proportional to 20,487.52, 30,727.86 and 5,697.93

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Solution

The fourth proportional to 20,487.52, 30,727.86 and 5,697.93 is: 8,545.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.52 : 30,727.86 = 5,697.93 : x
  2. Step 2: Convert to fraction form
    20,487.52/30,727.86 = 5,697.93/x
  3. Step 3: Cross multiply
    20,487.52x = 30,727.86 × 5,697.93
  4. Step 4: Simplify right side
    20,487.52x = 175,085,195.33
  5. Step 5: Solve for x
    x = 175,085,195.33/20,487.52
  6. Step 6: Final answer
    x = 8,545.94

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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.