Home / 20,952.75-31,429.28-6,161.88

Finding the Fourth Proportional to 20,952.75, 31,429.28 and 6,161.88

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Solution

The fourth proportional to 20,952.75, 31,429.28 and 6,161.88 is: 9,242.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.75 : 31,429.28 = 6,161.88 : x
  2. Step 2: Convert to fraction form
    20,952.75/31,429.28 = 6,161.88/x
  3. Step 3: Cross multiply
    20,952.75x = 31,429.28 × 6,161.88
  4. Step 4: Simplify right side
    20,952.75x = 193,663,451.85
  5. Step 5: Solve for x
    x = 193,663,451.85/20,952.75
  6. Step 6: Final answer
    x = 9,242.87

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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.