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Finding the Fourth Proportional to 31,739.67, 47,612.39 and 8,366.11

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Solution

The fourth proportional to 31,739.67, 47,612.39 and 8,366.11 is: 12,549.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,739.67 : 47,612.39 = 8,366.11 : x
  2. Step 2: Convert to fraction form
    31,739.67/47,612.39 = 8,366.11/x
  3. Step 3: Cross multiply
    31,739.67x = 47,612.39 × 8,366.11
  4. Step 4: Simplify right side
    31,739.67x = 398,330,523.48
  5. Step 5: Solve for x
    x = 398,330,523.48/31,739.67
  6. Step 6: Final answer
    x = 12,549.93

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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.