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Finding the Fourth Proportional to 12,363, 18,498 and 8,672.43

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Solution

The fourth proportional to 12,363, 18,498 and 8,672.43 is: 12,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,363 : 18,498 = 8,672.43 : x
  2. Step 2: Convert to fraction form
    12,363/18,498 = 8,672.43/x
  3. Step 3: Cross multiply
    12,363x = 18,498 × 8,672.43
  4. Step 4: Simplify right side
    12,363x = 160,422,610.14
  5. Step 5: Solve for x
    x = 160,422,610.14/12,363
  6. Step 6: Final answer
    x = 12,976.03

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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.