Home / 12,382.11-18,578.03-5,451.75

Finding the Fourth Proportional to 12,382.11, 18,578.03 and 5,451.75

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Solution

The fourth proportional to 12,382.11, 18,578.03 and 5,451.75 is: 8,179.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382.11 : 18,578.03 = 5,451.75 : x
  2. Step 2: Convert to fraction form
    12,382.11/18,578.03 = 5,451.75/x
  3. Step 3: Cross multiply
    12,382.11x = 18,578.03 × 5,451.75
  4. Step 4: Simplify right side
    12,382.11x = 101,282,747.79
  5. Step 5: Solve for x
    x = 101,282,747.79/12,382.11
  6. Step 6: Final answer
    x = 8,179.76

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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.