Home / 19,178.20-28,742.45-15,481.90

Finding the Fourth Proportional to 19,178.20, 28,742.45 and 15,481.90

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Solution

The fourth proportional to 19,178.20, 28,742.45 and 15,481.90 is: 23,202.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178.20 : 28,742.45 = 15,481.90 : x
  2. Step 2: Convert to fraction form
    19,178.20/28,742.45 = 15,481.90/x
  3. Step 3: Cross multiply
    19,178.20x = 28,742.45 × 15,481.90
  4. Step 4: Simplify right side
    19,178.20x = 444,987,592.94
  5. Step 5: Solve for x
    x = 444,987,592.94/19,178.20
  6. Step 6: Final answer
    x = 23,202.79

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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.