Home / 13,819.64-20,723.36-3,956.68

Finding the Fourth Proportional to 13,819.64, 20,723.36 and 3,956.68

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Solution

The fourth proportional to 13,819.64, 20,723.36 and 3,956.68 is: 5,933.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.64 : 20,723.36 = 3,956.68 : x
  2. Step 2: Convert to fraction form
    13,819.64/20,723.36 = 3,956.68/x
  3. Step 3: Cross multiply
    13,819.64x = 20,723.36 × 3,956.68
  4. Step 4: Simplify right side
    13,819.64x = 81,995,704.04
  5. Step 5: Solve for x
    x = 81,995,704.04/13,819.64
  6. Step 6: Final answer
    x = 5,933.27

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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.