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Finding the Fourth Proportional to 13,714.92, 18,926.46 and 8,049.78

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Solution

The fourth proportional to 13,714.92, 18,926.46 and 8,049.78 is: 11,108.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,714.92 : 18,926.46 = 8,049.78 : x
  2. Step 2: Convert to fraction form
    13,714.92/18,926.46 = 8,049.78/x
  3. Step 3: Cross multiply
    13,714.92x = 18,926.46 × 8,049.78
  4. Step 4: Simplify right side
    13,714.92x = 152,353,839.18
  5. Step 5: Solve for x
    x = 152,353,839.18/13,714.92
  6. Step 6: Final answer
    x = 11,108.62

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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.