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Finding the Fourth Proportional to 18,245.60, 27,370 and 13,375.84

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Solution

The fourth proportional to 18,245.60, 27,370 and 13,375.84 is: 20,064.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.60 : 27,370 = 13,375.84 : x
  2. Step 2: Convert to fraction form
    18,245.60/27,370 = 13,375.84/x
  3. Step 3: Cross multiply
    18,245.60x = 27,370 × 13,375.84
  4. Step 4: Simplify right side
    18,245.60x = 366,096,740.80
  5. Step 5: Solve for x
    x = 366,096,740.80/18,245.60
  6. Step 6: Final answer
    x = 20,064.93

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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.