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Finding the Fourth Proportional to 11,832, 16,329.12 and 6,864

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Solution

The fourth proportional to 11,832, 16,329.12 and 6,864 is: 9,472.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,832 : 16,329.12 = 6,864 : x
  2. Step 2: Convert to fraction form
    11,832/16,329.12 = 6,864/x
  3. Step 3: Cross multiply
    11,832x = 16,329.12 × 6,864
  4. Step 4: Simplify right side
    11,832x = 112,083,079.68
  5. Step 5: Solve for x
    x = 112,083,079.68/11,832
  6. Step 6: Final answer
    x = 9,472.88

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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.