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Finding the Fourth Proportional to 38,147.40, 57,170.88 and 18,389.88

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Solution

The fourth proportional to 38,147.40, 57,170.88 and 18,389.88 is: 27,560.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,147.40 : 57,170.88 = 18,389.88 : x
  2. Step 2: Convert to fraction form
    38,147.40/57,170.88 = 18,389.88/x
  3. Step 3: Cross multiply
    38,147.40x = 57,170.88 × 18,389.88
  4. Step 4: Simplify right side
    38,147.40x = 1,051,365,622.69
  5. Step 5: Solve for x
    x = 1,051,365,622.69/38,147.40
  6. Step 6: Final answer
    x = 27,560.61

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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.