Home / 13,819.55-20,732.51-3,958.91

Finding the Fourth Proportional to 13,819.55, 20,732.51 and 3,958.91

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Solution

The fourth proportional to 13,819.55, 20,732.51 and 3,958.91 is: 5,939.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.55 : 20,732.51 = 3,958.91 : x
  2. Step 2: Convert to fraction form
    13,819.55/20,732.51 = 3,958.91/x
  3. Step 3: Cross multiply
    13,819.55x = 20,732.51 × 3,958.91
  4. Step 4: Simplify right side
    13,819.55x = 82,078,141.16
  5. Step 5: Solve for x
    x = 82,078,141.16/13,819.55
  6. Step 6: Final answer
    x = 5,939.28

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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.