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Finding the Fourth Proportional to 18,524.70, 27,778.84 and 13,308.71

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Solution

The fourth proportional to 18,524.70, 27,778.84 and 13,308.71 is: 19,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,524.70 : 27,778.84 = 13,308.71 : x
  2. Step 2: Convert to fraction form
    18,524.70/27,778.84 = 13,308.71/x
  3. Step 3: Cross multiply
    18,524.70x = 27,778.84 × 13,308.71
  4. Step 4: Simplify right side
    18,524.70x = 369,700,353.53
  5. Step 5: Solve for x
    x = 369,700,353.53/18,524.70
  6. Step 6: Final answer
    x = 19,957.16

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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.