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Finding the Fourth Proportional to 20,235.66, 30,391.29 and 16,545.66

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Solution

The fourth proportional to 20,235.66, 30,391.29 and 16,545.66 is: 24,849.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.66 : 30,391.29 = 16,545.66 : x
  2. Step 2: Convert to fraction form
    20,235.66/30,391.29 = 16,545.66/x
  3. Step 3: Cross multiply
    20,235.66x = 30,391.29 × 16,545.66
  4. Step 4: Simplify right side
    20,235.66x = 502,843,951.30
  5. Step 5: Solve for x
    x = 502,843,951.30/20,235.66
  6. Step 6: Final answer
    x = 24,849.40

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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.