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Finding the Fourth Proportional to 16,600, 22,908 and 9,976

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Solution

The fourth proportional to 16,600, 22,908 and 9,976 is: 13,766.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,600 : 22,908 = 9,976 : x
  2. Step 2: Convert to fraction form
    16,600/22,908 = 9,976/x
  3. Step 3: Cross multiply
    16,600x = 22,908 × 9,976
  4. Step 4: Simplify right side
    16,600x = 228,530,208
  5. Step 5: Solve for x
    x = 228,530,208/16,600
  6. Step 6: Final answer
    x = 13,766.88

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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.