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Finding the Fourth Proportional to 11,874.74, 16,388.76 and 6,839.78

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Solution

The fourth proportional to 11,874.74, 16,388.76 and 6,839.78 is: 9,439.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,874.74 : 16,388.76 = 6,839.78 : x
  2. Step 2: Convert to fraction form
    11,874.74/16,388.76 = 6,839.78/x
  3. Step 3: Cross multiply
    11,874.74x = 16,388.76 × 6,839.78
  4. Step 4: Simplify right side
    11,874.74x = 112,095,512.87
  5. Step 5: Solve for x
    x = 112,095,512.87/11,874.74
  6. Step 6: Final answer
    x = 9,439.83

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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.