Home / 13,819.62-20,729.36-3,958.94

Finding the Fourth Proportional to 13,819.62, 20,729.36 and 3,958.94

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Solution

The fourth proportional to 13,819.62, 20,729.36 and 3,958.94 is: 5,938.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.62 : 20,729.36 = 3,958.94 : x
  2. Step 2: Convert to fraction form
    13,819.62/20,729.36 = 3,958.94/x
  3. Step 3: Cross multiply
    13,819.62x = 20,729.36 × 3,958.94
  4. Step 4: Simplify right side
    13,819.62x = 82,066,169.04
  5. Step 5: Solve for x
    x = 82,066,169.04/13,819.62
  6. Step 6: Final answer
    x = 5,938.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.