Home / 20,517.15-30,764.17-6,474.56

Finding the Fourth Proportional to 20,517.15, 30,764.17 and 6,474.56

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Solution

The fourth proportional to 20,517.15, 30,764.17 and 6,474.56 is: 9,708.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.15 : 30,764.17 = 6,474.56 : x
  2. Step 2: Convert to fraction form
    20,517.15/30,764.17 = 6,474.56/x
  3. Step 3: Cross multiply
    20,517.15x = 30,764.17 × 6,474.56
  4. Step 4: Simplify right side
    20,517.15x = 199,184,310.69
  5. Step 5: Solve for x
    x = 199,184,310.69/20,517.15
  6. Step 6: Final answer
    x = 9,708.19

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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.