Home / 20,512.06-30,771.14-6,470.61

Finding the Fourth Proportional to 20,512.06, 30,771.14 and 6,470.61

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Solution

The fourth proportional to 20,512.06, 30,771.14 and 6,470.61 is: 9,706.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.06 : 30,771.14 = 6,470.61 : x
  2. Step 2: Convert to fraction form
    20,512.06/30,771.14 = 6,470.61/x
  3. Step 3: Cross multiply
    20,512.06x = 30,771.14 × 6,470.61
  4. Step 4: Simplify right side
    20,512.06x = 199,108,046.20
  5. Step 5: Solve for x
    x = 199,108,046.20/20,512.06
  6. Step 6: Final answer
    x = 9,706.88

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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.