Home / 12,471.85-18,711.29-5,081.61

Finding the Fourth Proportional to 12,471.85, 18,711.29 and 5,081.61

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Solution

The fourth proportional to 12,471.85, 18,711.29 and 5,081.61 is: 7,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.85 : 18,711.29 = 5,081.61 : x
  2. Step 2: Convert to fraction form
    12,471.85/18,711.29 = 5,081.61/x
  3. Step 3: Cross multiply
    12,471.85x = 18,711.29 × 5,081.61
  4. Step 4: Simplify right side
    12,471.85x = 95,083,478.38
  5. Step 5: Solve for x
    x = 95,083,478.38/12,471.85
  6. Step 6: Final answer
    x = 7,623.85

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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.