Home / 20,821.85-31,237.77-6,031.79

Finding the Fourth Proportional to 20,821.85, 31,237.77 and 6,031.79

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Solution

The fourth proportional to 20,821.85, 31,237.77 and 6,031.79 is: 9,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821.85 : 31,237.77 = 6,031.79 : x
  2. Step 2: Convert to fraction form
    20,821.85/31,237.77 = 6,031.79/x
  3. Step 3: Cross multiply
    20,821.85x = 31,237.77 × 6,031.79
  4. Step 4: Simplify right side
    20,821.85x = 188,419,512.52
  5. Step 5: Solve for x
    x = 188,419,512.52/20,821.85
  6. Step 6: Final answer
    x = 9,049.13

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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.