Home / 10,145.25-15,215.85-3,571.70

Finding the Fourth Proportional to 10,145.25, 15,215.85 and 3,571.70

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Solution

The fourth proportional to 10,145.25, 15,215.85 and 3,571.70 is: 5,356.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.25 : 15,215.85 = 3,571.70 : x
  2. Step 2: Convert to fraction form
    10,145.25/15,215.85 = 3,571.70/x
  3. Step 3: Cross multiply
    10,145.25x = 15,215.85 × 3,571.70
  4. Step 4: Simplify right side
    10,145.25x = 54,346,375.37
  5. Step 5: Solve for x
    x = 54,346,375.37/10,145.25
  6. Step 6: Final answer
    x = 5,356.83

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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.