Home / 20,974.47-28,944.35-11,414.20

Finding the Fourth Proportional to 20,974.47, 28,944.35 and 11,414.20

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Solution

The fourth proportional to 20,974.47, 28,944.35 and 11,414.20 is: 15,751.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.47 : 28,944.35 = 11,414.20 : x
  2. Step 2: Convert to fraction form
    20,974.47/28,944.35 = 11,414.20/x
  3. Step 3: Cross multiply
    20,974.47x = 28,944.35 × 11,414.20
  4. Step 4: Simplify right side
    20,974.47x = 330,376,397.98
  5. Step 5: Solve for x
    x = 330,376,397.98/20,974.47
  6. Step 6: Final answer
    x = 15,751.36

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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.