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Finding the Fourth Proportional to 29,379, 40,545.18 and 18,203.16

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Solution

The fourth proportional to 29,379, 40,545.18 and 18,203.16 is: 25,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,379 : 40,545.18 = 18,203.16 : x
  2. Step 2: Convert to fraction form
    29,379/40,545.18 = 18,203.16/x
  3. Step 3: Cross multiply
    29,379x = 40,545.18 × 18,203.16
  4. Step 4: Simplify right side
    29,379x = 738,050,398.77
  5. Step 5: Solve for x
    x = 738,050,398.77/29,379
  6. Step 6: Final answer
    x = 25,121.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.