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Finding the Fourth Proportional to 16,312.38, 22,511.09 and 8,860.38

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Solution

The fourth proportional to 16,312.38, 22,511.09 and 8,860.38 is: 12,227.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,312.38 : 22,511.09 = 8,860.38 : x
  2. Step 2: Convert to fraction form
    16,312.38/22,511.09 = 8,860.38/x
  3. Step 3: Cross multiply
    16,312.38x = 22,511.09 × 8,860.38
  4. Step 4: Simplify right side
    16,312.38x = 199,456,811.61
  5. Step 5: Solve for x
    x = 199,456,811.61/16,312.38
  6. Step 6: Final answer
    x = 12,227.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.