Home / 20,924.80-28,873.92-11,974.72

Finding the Fourth Proportional to 20,924.80, 28,873.92 and 11,974.72

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Solution

The fourth proportional to 20,924.80, 28,873.92 and 11,974.72 is: 16,523.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.80 : 28,873.92 = 11,974.72 : x
  2. Step 2: Convert to fraction form
    20,924.80/28,873.92 = 11,974.72/x
  3. Step 3: Cross multiply
    20,924.80x = 28,873.92 × 11,974.72
  4. Step 4: Simplify right side
    20,924.80x = 345,757,107.30
  5. Step 5: Solve for x
    x = 345,757,107.30/20,924.80
  6. Step 6: Final answer
    x = 16,523.80

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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.