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Finding the Fourth Proportional to 18,976, 26,184.88 and 11,016.66

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Solution

The fourth proportional to 18,976, 26,184.88 and 11,016.66 is: 15,201.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,976 : 26,184.88 = 11,016.66 : x
  2. Step 2: Convert to fraction form
    18,976/26,184.88 = 11,016.66/x
  3. Step 3: Cross multiply
    18,976x = 26,184.88 × 11,016.66
  4. Step 4: Simplify right side
    18,976x = 288,469,920.10
  5. Step 5: Solve for x
    x = 288,469,920.10/18,976
  6. Step 6: Final answer
    x = 15,201.83

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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.