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Finding the Fourth Proportional to 20,545.65, 30,822.53 and 7,397.73

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Solution

The fourth proportional to 20,545.65, 30,822.53 and 7,397.73 is: 11,098.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.65 : 30,822.53 = 7,397.73 : x
  2. Step 2: Convert to fraction form
    20,545.65/30,822.53 = 7,397.73/x
  3. Step 3: Cross multiply
    20,545.65x = 30,822.53 × 7,397.73
  4. Step 4: Simplify right side
    20,545.65x = 228,016,717.87
  5. Step 5: Solve for x
    x = 228,016,717.87/20,545.65
  6. Step 6: Final answer
    x = 11,098.05

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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.