Home / 15,811.96-23,732.30-8,422.72

Finding the Fourth Proportional to 15,811.96, 23,732.30 and 8,422.72

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Solution

The fourth proportional to 15,811.96, 23,732.30 and 8,422.72 is: 12,641.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.96 : 23,732.30 = 8,422.72 : x
  2. Step 2: Convert to fraction form
    15,811.96/23,732.30 = 8,422.72/x
  3. Step 3: Cross multiply
    15,811.96x = 23,732.30 × 8,422.72
  4. Step 4: Simplify right side
    15,811.96x = 199,890,517.86
  5. Step 5: Solve for x
    x = 199,890,517.86/15,811.96
  6. Step 6: Final answer
    x = 12,641.73

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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.