Home / 19,189.20-28,781.79-5,150.73

Finding the Fourth Proportional to 19,189.20, 28,781.79 and 5,150.73

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Solution

The fourth proportional to 19,189.20, 28,781.79 and 5,150.73 is: 7,725.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,189.20 : 28,781.79 = 5,150.73 : x
  2. Step 2: Convert to fraction form
    19,189.20/28,781.79 = 5,150.73/x
  3. Step 3: Cross multiply
    19,189.20x = 28,781.79 × 5,150.73
  4. Step 4: Simplify right side
    19,189.20x = 148,247,229.21
  5. Step 5: Solve for x
    x = 148,247,229.21/19,189.20
  6. Step 6: Final answer
    x = 7,725.56

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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.