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Finding the Fourth Proportional to 11,129.97, 16,701.68 and 5,868.87

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Solution

The fourth proportional to 11,129.97, 16,701.68 and 5,868.87 is: 8,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.97 : 16,701.68 = 5,868.87 : x
  2. Step 2: Convert to fraction form
    11,129.97/16,701.68 = 5,868.87/x
  3. Step 3: Cross multiply
    11,129.97x = 16,701.68 × 5,868.87
  4. Step 4: Simplify right side
    11,129.97x = 98,020,001.68
  5. Step 5: Solve for x
    x = 98,020,001.68/11,129.97
  6. Step 6: Final answer
    x = 8,806.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.