Home / 20,974.80-28,944.84-11,414.35

Finding the Fourth Proportional to 20,974.80, 28,944.84 and 11,414.35

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Solution

The fourth proportional to 20,974.80, 28,944.84 and 11,414.35 is: 15,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.80 : 28,944.84 = 11,414.35 : x
  2. Step 2: Convert to fraction form
    20,974.80/28,944.84 = 11,414.35/x
  3. Step 3: Cross multiply
    20,974.80x = 28,944.84 × 11,414.35
  4. Step 4: Simplify right side
    20,974.80x = 330,386,613.44
  5. Step 5: Solve for x
    x = 330,386,613.44/20,974.80
  6. Step 6: Final answer
    x = 15,751.60

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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.