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Finding the Fourth Proportional to 12,624.71, 18,937.11 and 3,859.61

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Solution

The fourth proportional to 12,624.71, 18,937.11 and 3,859.61 is: 5,789.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.71 : 18,937.11 = 3,859.61 : x
  2. Step 2: Convert to fraction form
    12,624.71/18,937.11 = 3,859.61/x
  3. Step 3: Cross multiply
    12,624.71x = 18,937.11 × 3,859.61
  4. Step 4: Simplify right side
    12,624.71x = 73,089,764.44
  5. Step 5: Solve for x
    x = 73,089,764.44/12,624.71
  6. Step 6: Final answer
    x = 5,789.42

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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.