Home / 20,825.46-28,738.89-11,394

Finding the Fourth Proportional to 20,825.46, 28,738.89 and 11,394

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Solution

The fourth proportional to 20,825.46, 28,738.89 and 11,394 is: 15,723.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.46 : 28,738.89 = 11,394 : x
  2. Step 2: Convert to fraction form
    20,825.46/28,738.89 = 11,394/x
  3. Step 3: Cross multiply
    20,825.46x = 28,738.89 × 11,394
  4. Step 4: Simplify right side
    20,825.46x = 327,450,912.66
  5. Step 5: Solve for x
    x = 327,450,912.66/20,825.46
  6. Step 6: Final answer
    x = 15,723.59

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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.