Home / 13,819.39-20,722.99-3,956.43

Finding the Fourth Proportional to 13,819.39, 20,722.99 and 3,956.43

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Solution

The fourth proportional to 13,819.39, 20,722.99 and 3,956.43 is: 5,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.39 : 20,722.99 = 3,956.43 : x
  2. Step 2: Convert to fraction form
    13,819.39/20,722.99 = 3,956.43/x
  3. Step 3: Cross multiply
    13,819.39x = 20,722.99 × 3,956.43
  4. Step 4: Simplify right side
    13,819.39x = 81,989,059.33
  5. Step 5: Solve for x
    x = 81,989,059.33/13,819.39
  6. Step 6: Final answer
    x = 5,932.90

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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.