Home / 11,974.20-17,958.74-3,761.72

Finding the Fourth Proportional to 11,974.20, 17,958.74 and 3,761.72

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Solution

The fourth proportional to 11,974.20, 17,958.74 and 3,761.72 is: 5,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,974.20 : 17,958.74 = 3,761.72 : x
  2. Step 2: Convert to fraction form
    11,974.20/17,958.74 = 3,761.72/x
  3. Step 3: Cross multiply
    11,974.20x = 17,958.74 × 3,761.72
  4. Step 4: Simplify right side
    11,974.20x = 67,555,751.43
  5. Step 5: Solve for x
    x = 67,555,751.43/11,974.20
  6. Step 6: Final answer
    x = 5,641.78

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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.