Home / 10,120.28-15,179.84-3,880.04

Finding the Fourth Proportional to 10,120.28, 15,179.84 and 3,880.04

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Solution

The fourth proportional to 10,120.28, 15,179.84 and 3,880.04 is: 5,819.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.28 : 15,179.84 = 3,880.04 : x
  2. Step 2: Convert to fraction form
    10,120.28/15,179.84 = 3,880.04/x
  3. Step 3: Cross multiply
    10,120.28x = 15,179.84 × 3,880.04
  4. Step 4: Simplify right side
    10,120.28x = 58,898,404.94
  5. Step 5: Solve for x
    x = 58,898,404.94/10,120.28
  6. Step 6: Final answer
    x = 5,819.84

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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.