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Finding the Fourth Proportional to 29,134.86, 43,693.04 and 12,490.44

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Solution

The fourth proportional to 29,134.86, 43,693.04 and 12,490.44 is: 18,731.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,134.86 : 43,693.04 = 12,490.44 : x
  2. Step 2: Convert to fraction form
    29,134.86/43,693.04 = 12,490.44/x
  3. Step 3: Cross multiply
    29,134.86x = 43,693.04 × 12,490.44
  4. Step 4: Simplify right side
    29,134.86x = 545,745,294.54
  5. Step 5: Solve for x
    x = 545,745,294.54/29,134.86
  6. Step 6: Final answer
    x = 18,731.69

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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.