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Finding the Fourth Proportional to 16,217, 22,379.46 and 8,765

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Solution

The fourth proportional to 16,217, 22,379.46 and 8,765 is: 12,095.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,217 : 22,379.46 = 8,765 : x
  2. Step 2: Convert to fraction form
    16,217/22,379.46 = 8,765/x
  3. Step 3: Cross multiply
    16,217x = 22,379.46 × 8,765
  4. Step 4: Simplify right side
    16,217x = 196,155,966.90
  5. Step 5: Solve for x
    x = 196,155,966.90/16,217
  6. Step 6: Final answer
    x = 12,095.70

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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.