Home / 20,761.28-28,650.48-11,329.82

Finding the Fourth Proportional to 20,761.28, 28,650.48 and 11,329.82

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Solution

The fourth proportional to 20,761.28, 28,650.48 and 11,329.82 is: 15,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.28 : 28,650.48 = 11,329.82 : x
  2. Step 2: Convert to fraction form
    20,761.28/28,650.48 = 11,329.82/x
  3. Step 3: Cross multiply
    20,761.28x = 28,650.48 × 11,329.82
  4. Step 4: Simplify right side
    20,761.28x = 324,604,781.31
  5. Step 5: Solve for x
    x = 324,604,781.31/20,761.28
  6. Step 6: Final answer
    x = 15,635.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.