Home / 20,734.17-31,101.25-5,151.79

Finding the Fourth Proportional to 20,734.17, 31,101.25 and 5,151.79

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Solution

The fourth proportional to 20,734.17, 31,101.25 and 5,151.79 is: 7,727.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.17 : 31,101.25 = 5,151.79 : x
  2. Step 2: Convert to fraction form
    20,734.17/31,101.25 = 5,151.79/x
  3. Step 3: Cross multiply
    20,734.17x = 31,101.25 × 5,151.79
  4. Step 4: Simplify right side
    20,734.17x = 160,227,108.74
  5. Step 5: Solve for x
    x = 160,227,108.74/20,734.17
  6. Step 6: Final answer
    x = 7,727.68

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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.