Home / 10,081.38-15,122.41-2,685.84

Finding the Fourth Proportional to 10,081.38, 15,122.41 and 2,685.84

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Solution

The fourth proportional to 10,081.38, 15,122.41 and 2,685.84 is: 4,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.38 : 15,122.41 = 2,685.84 : x
  2. Step 2: Convert to fraction form
    10,081.38/15,122.41 = 2,685.84/x
  3. Step 3: Cross multiply
    10,081.38x = 15,122.41 × 2,685.84
  4. Step 4: Simplify right side
    10,081.38x = 40,616,410.42
  5. Step 5: Solve for x
    x = 40,616,410.42/10,081.38
  6. Step 6: Final answer
    x = 4,028.85

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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.