Home / 20,481.43-28,264.90-11,529.25

Finding the Fourth Proportional to 20,481.43, 28,264.90 and 11,529.25

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Solution

The fourth proportional to 20,481.43, 28,264.90 and 11,529.25 is: 15,910.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.43 : 28,264.90 = 11,529.25 : x
  2. Step 2: Convert to fraction form
    20,481.43/28,264.90 = 11,529.25/x
  3. Step 3: Cross multiply
    20,481.43x = 28,264.90 × 11,529.25
  4. Step 4: Simplify right side
    20,481.43x = 325,873,023.73
  5. Step 5: Solve for x
    x = 325,873,023.73/20,481.43
  6. Step 6: Final answer
    x = 15,910.66

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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.