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Finding the Fourth Proportional to 12,498.98, 18,748.47 and 5,005.91

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Solution

The fourth proportional to 12,498.98, 18,748.47 and 5,005.91 is: 7,508.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498.98 : 18,748.47 = 5,005.91 : x
  2. Step 2: Convert to fraction form
    12,498.98/18,748.47 = 5,005.91/x
  3. Step 3: Cross multiply
    12,498.98x = 18,748.47 × 5,005.91
  4. Step 4: Simplify right side
    12,498.98x = 93,853,153.46
  5. Step 5: Solve for x
    x = 93,853,153.46/12,498.98
  6. Step 6: Final answer
    x = 7,508.87

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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.