Home / 20,508.46-30,768.20-6,469.03

Finding the Fourth Proportional to 20,508.46, 30,768.20 and 6,469.03

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Solution

The fourth proportional to 20,508.46, 30,768.20 and 6,469.03 is: 9,705.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.46 : 30,768.20 = 6,469.03 : x
  2. Step 2: Convert to fraction form
    20,508.46/30,768.20 = 6,469.03/x
  3. Step 3: Cross multiply
    20,508.46x = 30,768.20 × 6,469.03
  4. Step 4: Simplify right side
    20,508.46x = 199,040,475.61
  5. Step 5: Solve for x
    x = 199,040,475.61/20,508.46
  6. Step 6: Final answer
    x = 9,705.29

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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.