Home / 10,517.43-15,774.78-3,121.74

Finding the Fourth Proportional to 10,517.43, 15,774.78 and 3,121.74

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Solution

The fourth proportional to 10,517.43, 15,774.78 and 3,121.74 is: 4,682.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.43 : 15,774.78 = 3,121.74 : x
  2. Step 2: Convert to fraction form
    10,517.43/15,774.78 = 3,121.74/x
  3. Step 3: Cross multiply
    10,517.43x = 15,774.78 × 3,121.74
  4. Step 4: Simplify right side
    10,517.43x = 49,244,761.72
  5. Step 5: Solve for x
    x = 49,244,761.72/10,517.43
  6. Step 6: Final answer
    x = 4,682.20

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1.5x scale

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.