Home / 20,761.52-28,649.94-11,329.88

Finding the Fourth Proportional to 20,761.52, 28,649.94 and 11,329.88

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Solution

The fourth proportional to 20,761.52, 28,649.94 and 11,329.88 is: 15,634.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.52 : 28,649.94 = 11,329.88 : x
  2. Step 2: Convert to fraction form
    20,761.52/28,649.94 = 11,329.88/x
  3. Step 3: Cross multiply
    20,761.52x = 28,649.94 × 11,329.88
  4. Step 4: Simplify right side
    20,761.52x = 324,600,382.21
  5. Step 5: Solve for x
    x = 324,600,382.21/20,761.52
  6. Step 6: Final answer
    x = 15,634.71

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1.5x scale

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.