Home / 20,474.28-30,718.92-8,631.03

Finding the Fourth Proportional to 20,474.28, 30,718.92 and 8,631.03

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Solution

The fourth proportional to 20,474.28, 30,718.92 and 8,631.03 is: 12,949.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.28 : 30,718.92 = 8,631.03 : x
  2. Step 2: Convert to fraction form
    20,474.28/30,718.92 = 8,631.03/x
  3. Step 3: Cross multiply
    20,474.28x = 30,718.92 × 8,631.03
  4. Step 4: Simplify right side
    20,474.28x = 265,135,952.45
  5. Step 5: Solve for x
    x = 265,135,952.45/20,474.28
  6. Step 6: Final answer
    x = 12,949.71

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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.