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Finding the Fourth Proportional to 16,207, 22,365.66 and 8,755

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Solution

The fourth proportional to 16,207, 22,365.66 and 8,755 is: 12,081.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,207 : 22,365.66 = 8,755 : x
  2. Step 2: Convert to fraction form
    16,207/22,365.66 = 8,755/x
  3. Step 3: Cross multiply
    16,207x = 22,365.66 × 8,755
  4. Step 4: Simplify right side
    16,207x = 195,811,353.30
  5. Step 5: Solve for x
    x = 195,811,353.30/16,207
  6. Step 6: Final answer
    x = 12,081.90

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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.