Home / 20,517.64-30,764.92-6,475.05

Finding the Fourth Proportional to 20,517.64, 30,764.92 and 6,475.05

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Solution

The fourth proportional to 20,517.64, 30,764.92 and 6,475.05 is: 9,708.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.64 : 30,764.92 = 6,475.05 : x
  2. Step 2: Convert to fraction form
    20,517.64/30,764.92 = 6,475.05/x
  3. Step 3: Cross multiply
    20,517.64x = 30,764.92 × 6,475.05
  4. Step 4: Simplify right side
    20,517.64x = 199,204,395.25
  5. Step 5: Solve for x
    x = 199,204,395.25/20,517.64
  6. Step 6: Final answer
    x = 9,708.93

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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.