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Finding the Fourth Proportional to 29,914.80, 44,872.20 and 12,379.92

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Solution

The fourth proportional to 29,914.80, 44,872.20 and 12,379.92 is: 18,569.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,914.80 : 44,872.20 = 12,379.92 : x
  2. Step 2: Convert to fraction form
    29,914.80/44,872.20 = 12,379.92/x
  3. Step 3: Cross multiply
    29,914.80x = 44,872.20 × 12,379.92
  4. Step 4: Simplify right side
    29,914.80x = 555,514,246.22
  5. Step 5: Solve for x
    x = 555,514,246.22/29,914.80
  6. Step 6: Final answer
    x = 18,569.88

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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.