Home / 20,460.89-28,251.92-15,976.87

Finding the Fourth Proportional to 20,460.89, 28,251.92 and 15,976.87

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Solution

The fourth proportional to 20,460.89, 28,251.92 and 15,976.87 is: 22,060.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.89 : 28,251.92 = 15,976.87 : x
  2. Step 2: Convert to fraction form
    20,460.89/28,251.92 = 15,976.87/x
  3. Step 3: Cross multiply
    20,460.89x = 28,251.92 × 15,976.87
  4. Step 4: Simplify right side
    20,460.89x = 451,377,031.95
  5. Step 5: Solve for x
    x = 451,377,031.95/20,460.89
  6. Step 6: Final answer
    x = 22,060.48

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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.