Home / 10,517.25-15,775.68-3,126.70

Finding the Fourth Proportional to 10,517.25, 15,775.68 and 3,126.70

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Solution

The fourth proportional to 10,517.25, 15,775.68 and 3,126.70 is: 4,689.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.25 : 15,775.68 = 3,126.70 : x
  2. Step 2: Convert to fraction form
    10,517.25/15,775.68 = 3,126.70/x
  3. Step 3: Cross multiply
    10,517.25x = 15,775.68 × 3,126.70
  4. Step 4: Simplify right side
    10,517.25x = 49,325,818.66
  5. Step 5: Solve for x
    x = 49,325,818.66/10,517.25
  6. Step 6: Final answer
    x = 4,689.99

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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.