Home / 20,223.61-30,344.82-7,739.52

Finding the Fourth Proportional to 20,223.61, 30,344.82 and 7,739.52

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Solution

The fourth proportional to 20,223.61, 30,344.82 and 7,739.52 is: 11,612.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.61 : 30,344.82 = 7,739.52 : x
  2. Step 2: Convert to fraction form
    20,223.61/30,344.82 = 7,739.52/x
  3. Step 3: Cross multiply
    20,223.61x = 30,344.82 × 7,739.52
  4. Step 4: Simplify right side
    20,223.61x = 234,854,198.47
  5. Step 5: Solve for x
    x = 234,854,198.47/20,223.61
  6. Step 6: Final answer
    x = 11,612.87

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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.