Home / 31,708.81-47,587.11-21,689.61

Finding the Fourth Proportional to 31,708.81, 47,587.11 and 21,689.61

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Solution

The fourth proportional to 31,708.81, 47,587.11 and 21,689.61 is: 32,550.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,708.81 : 47,587.11 = 21,689.61 : x
  2. Step 2: Convert to fraction form
    31,708.81/47,587.11 = 21,689.61/x
  3. Step 3: Cross multiply
    31,708.81x = 47,587.11 × 21,689.61
  4. Step 4: Simplify right side
    31,708.81x = 1,032,145,856.93
  5. Step 5: Solve for x
    x = 1,032,145,856.93/31,708.81
  6. Step 6: Final answer
    x = 32,550.76

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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.