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Finding the Fourth Proportional to 31,807.10, 47,711.52 and 8,433.50

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Solution

The fourth proportional to 31,807.10, 47,711.52 and 8,433.50 is: 12,650.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,807.10 : 47,711.52 = 8,433.50 : x
  2. Step 2: Convert to fraction form
    31,807.10/47,711.52 = 8,433.50/x
  3. Step 3: Cross multiply
    31,807.10x = 47,711.52 × 8,433.50
  4. Step 4: Simplify right side
    31,807.10x = 402,375,103.92
  5. Step 5: Solve for x
    x = 402,375,103.92/31,807.10
  6. Step 6: Final answer
    x = 12,650.48

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1.5x scale

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.