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Finding the Fourth Proportional to 12,498.38, 18,750.65 and 8,807.82

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Solution

The fourth proportional to 12,498.38, 18,750.65 and 8,807.82 is: 13,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498.38 : 18,750.65 = 8,807.82 : x
  2. Step 2: Convert to fraction form
    12,498.38/18,750.65 = 8,807.82/x
  3. Step 3: Cross multiply
    12,498.38x = 18,750.65 × 8,807.82
  4. Step 4: Simplify right side
    12,498.38x = 165,152,350.08
  5. Step 5: Solve for x
    x = 165,152,350.08/12,498.38
  6. Step 6: Final answer
    x = 13,213.90

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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.