Home / 20,469.82-30,701.68-5,677.20

Finding the Fourth Proportional to 20,469.82, 30,701.68 and 5,677.20

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Solution

The fourth proportional to 20,469.82, 30,701.68 and 5,677.20 is: 8,514.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.82 : 30,701.68 = 5,677.20 : x
  2. Step 2: Convert to fraction form
    20,469.82/30,701.68 = 5,677.20/x
  3. Step 3: Cross multiply
    20,469.82x = 30,701.68 × 5,677.20
  4. Step 4: Simplify right side
    20,469.82x = 174,299,577.70
  5. Step 5: Solve for x
    x = 174,299,577.70/20,469.82
  6. Step 6: Final answer
    x = 8,514.95

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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.