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Finding the Fourth Proportional to 11,874.33, 16,387.38 and 6,839.88

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Solution

The fourth proportional to 11,874.33, 16,387.38 and 6,839.88 is: 9,439.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,874.33 : 16,387.38 = 6,839.88 : x
  2. Step 2: Convert to fraction form
    11,874.33/16,387.38 = 6,839.88/x
  3. Step 3: Cross multiply
    11,874.33x = 16,387.38 × 6,839.88
  4. Step 4: Simplify right side
    11,874.33x = 112,087,712.71
  5. Step 5: Solve for x
    x = 112,087,712.71/11,874.33
  6. Step 6: Final answer
    x = 9,439.50

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1.5x scale

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.