Home / 20,584.38-28,422.44-15,796.74

Finding the Fourth Proportional to 20,584.38, 28,422.44 and 15,796.74

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Solution

The fourth proportional to 20,584.38, 28,422.44 and 15,796.74 is: 21,811.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.38 : 28,422.44 = 15,796.74 : x
  2. Step 2: Convert to fraction form
    20,584.38/28,422.44 = 15,796.74/x
  3. Step 3: Cross multiply
    20,584.38x = 28,422.44 × 15,796.74
  4. Step 4: Simplify right side
    20,584.38x = 448,981,894.85
  5. Step 5: Solve for x
    x = 448,981,894.85/20,584.38
  6. Step 6: Final answer
    x = 21,811.78

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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.