Home / 31,711.46-47,563.40-8,339.72

Finding the Fourth Proportional to 31,711.46, 47,563.40 and 8,339.72

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Solution

The fourth proportional to 31,711.46, 47,563.40 and 8,339.72 is: 12,508.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,711.46 : 47,563.40 = 8,339.72 : x
  2. Step 2: Convert to fraction form
    31,711.46/47,563.40 = 8,339.72/x
  3. Step 3: Cross multiply
    31,711.46x = 47,563.40 × 8,339.72
  4. Step 4: Simplify right side
    31,711.46x = 396,665,158.73
  5. Step 5: Solve for x
    x = 396,665,158.73/31,711.46
  6. Step 6: Final answer
    x = 12,508.58

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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.