Home / 31,822.20-47,721.12-9,628.20

Finding the Fourth Proportional to 31,822.20, 47,721.12 and 9,628.20

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Solution

The fourth proportional to 31,822.20, 47,721.12 and 9,628.20 is: 14,438.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,822.20 : 47,721.12 = 9,628.20 : x
  2. Step 2: Convert to fraction form
    31,822.20/47,721.12 = 9,628.20/x
  3. Step 3: Cross multiply
    31,822.20x = 47,721.12 × 9,628.20
  4. Step 4: Simplify right side
    31,822.20x = 459,468,487.58
  5. Step 5: Solve for x
    x = 459,468,487.58/31,822.20
  6. Step 6: Final answer
    x = 14,438.61

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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.