Home / 26,868.92-40,286.10-12,821.36

Finding the Fourth Proportional to 26,868.92, 40,286.10 and 12,821.36

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Solution

The fourth proportional to 26,868.92, 40,286.10 and 12,821.36 is: 19,223.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,868.92 : 40,286.10 = 12,821.36 : x
  2. Step 2: Convert to fraction form
    26,868.92/40,286.10 = 12,821.36/x
  3. Step 3: Cross multiply
    26,868.92x = 40,286.10 × 12,821.36
  4. Step 4: Simplify right side
    26,868.92x = 516,522,591.10
  5. Step 5: Solve for x
    x = 516,522,591.10/26,868.92
  6. Step 6: Final answer
    x = 19,223.79

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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.