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Finding the Fourth Proportional to 18,349.68, 27,520.13 and 8,479.49

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Solution

The fourth proportional to 18,349.68, 27,520.13 and 8,479.49 is: 12,717.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,349.68 : 27,520.13 = 8,479.49 : x
  2. Step 2: Convert to fraction form
    18,349.68/27,520.13 = 8,479.49/x
  3. Step 3: Cross multiply
    18,349.68x = 27,520.13 × 8,479.49
  4. Step 4: Simplify right side
    18,349.68x = 233,356,487.14
  5. Step 5: Solve for x
    x = 233,356,487.14/18,349.68
  6. Step 6: Final answer
    x = 12,717.20

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1.5x scale

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.