Home / 10,082.25-15,120.92-3,156.75

Finding the Fourth Proportional to 10,082.25, 15,120.92 and 3,156.75

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Solution

The fourth proportional to 10,082.25, 15,120.92 and 3,156.75 is: 4,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,082.25 : 15,120.92 = 3,156.75 : x
  2. Step 2: Convert to fraction form
    10,082.25/15,120.92 = 3,156.75/x
  3. Step 3: Cross multiply
    10,082.25x = 15,120.92 × 3,156.75
  4. Step 4: Simplify right side
    10,082.25x = 47,732,948.43
  5. Step 5: Solve for x
    x = 47,732,948.43/10,082.25
  6. Step 6: Final answer
    x = 4,734.35

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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.