Home / 20,192.75-30,137.92-18,864.15

Finding the Fourth Proportional to 20,192.75, 30,137.92 and 18,864.15

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Solution

The fourth proportional to 20,192.75, 30,137.92 and 18,864.15 is: 28,154.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.75 : 30,137.92 = 18,864.15 : x
  2. Step 2: Convert to fraction form
    20,192.75/30,137.92 = 18,864.15/x
  3. Step 3: Cross multiply
    20,192.75x = 30,137.92 × 18,864.15
  4. Step 4: Simplify right side
    20,192.75x = 568,526,243.57
  5. Step 5: Solve for x
    x = 568,526,243.57/20,192.75
  6. Step 6: Final answer
    x = 28,154.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.