Home / 20,845.75-28,764.46-11,892.73

Finding the Fourth Proportional to 20,845.75, 28,764.46 and 11,892.73

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Solution

The fourth proportional to 20,845.75, 28,764.46 and 11,892.73 is: 16,410.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.75 : 28,764.46 = 11,892.73 : x
  2. Step 2: Convert to fraction form
    20,845.75/28,764.46 = 11,892.73/x
  3. Step 3: Cross multiply
    20,845.75x = 28,764.46 × 11,892.73
  4. Step 4: Simplify right side
    20,845.75x = 342,087,956.38
  5. Step 5: Solve for x
    x = 342,087,956.38/20,845.75
  6. Step 6: Final answer
    x = 16,410.44

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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.