Home / 20,217.92-27,902.24-13,145.28

Finding the Fourth Proportional to 20,217.92, 27,902.24 and 13,145.28

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Solution

The fourth proportional to 20,217.92, 27,902.24 and 13,145.28 is: 18,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.92 : 27,902.24 = 13,145.28 : x
  2. Step 2: Convert to fraction form
    20,217.92/27,902.24 = 13,145.28/x
  3. Step 3: Cross multiply
    20,217.92x = 27,902.24 × 13,145.28
  4. Step 4: Simplify right side
    20,217.92x = 366,782,757.43
  5. Step 5: Solve for x
    x = 366,782,757.43/20,217.92
  6. Step 6: Final answer
    x = 18,141.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.