Home / 20,928.97-28,883.15-11,974.42

Finding the Fourth Proportional to 20,928.97, 28,883.15 and 11,974.42

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Solution

The fourth proportional to 20,928.97, 28,883.15 and 11,974.42 is: 16,525.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.97 : 28,883.15 = 11,974.42 : x
  2. Step 2: Convert to fraction form
    20,928.97/28,883.15 = 11,974.42/x
  3. Step 3: Cross multiply
    20,928.97x = 28,883.15 × 11,974.42
  4. Step 4: Simplify right side
    20,928.97x = 345,858,969.02
  5. Step 5: Solve for x
    x = 345,858,969.02/20,928.97
  6. Step 6: Final answer
    x = 16,525.37

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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.