Home / 10,143.28-15,221.70-3,569.44

Finding the Fourth Proportional to 10,143.28, 15,221.70 and 3,569.44

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Solution

The fourth proportional to 10,143.28, 15,221.70 and 3,569.44 is: 5,356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.28 : 15,221.70 = 3,569.44 : x
  2. Step 2: Convert to fraction form
    10,143.28/15,221.70 = 3,569.44/x
  3. Step 3: Cross multiply
    10,143.28x = 15,221.70 × 3,569.44
  4. Step 4: Simplify right side
    10,143.28x = 54,332,944.85
  5. Step 5: Solve for x
    x = 54,332,944.85/10,143.28
  6. Step 6: Final answer
    x = 5,356.55

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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.