Home / 20,151.20-30,231.92-11,838.24

Finding the Fourth Proportional to 20,151.20, 30,231.92 and 11,838.24

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Solution

The fourth proportional to 20,151.20, 30,231.92 and 11,838.24 is: 17,760.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.20 : 30,231.92 = 11,838.24 : x
  2. Step 2: Convert to fraction form
    20,151.20/30,231.92 = 11,838.24/x
  3. Step 3: Cross multiply
    20,151.20x = 30,231.92 × 11,838.24
  4. Step 4: Simplify right side
    20,151.20x = 357,892,724.62
  5. Step 5: Solve for x
    x = 357,892,724.62/20,151.20
  6. Step 6: Final answer
    x = 17,760.37

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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.