Home / 20,660.22-30,969.24-8,163

Finding the Fourth Proportional to 20,660.22, 30,969.24 and 8,163

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Solution

The fourth proportional to 20,660.22, 30,969.24 and 8,163 is: 12,236.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.22 : 30,969.24 = 8,163 : x
  2. Step 2: Convert to fraction form
    20,660.22/30,969.24 = 8,163/x
  3. Step 3: Cross multiply
    20,660.22x = 30,969.24 × 8,163
  4. Step 4: Simplify right side
    20,660.22x = 252,801,906.12
  5. Step 5: Solve for x
    x = 252,801,906.12/20,660.22
  6. Step 6: Final answer
    x = 12,236.17

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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.