Home / 20,128.68-30,197.77-19,793.97

Finding the Fourth Proportional to 20,128.68, 30,197.77 and 19,793.97

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Solution

The fourth proportional to 20,128.68, 30,197.77 and 19,793.97 is: 29,695.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.68 : 30,197.77 = 19,793.97 : x
  2. Step 2: Convert to fraction form
    20,128.68/30,197.77 = 19,793.97/x
  3. Step 3: Cross multiply
    20,128.68x = 30,197.77 × 19,793.97
  4. Step 4: Simplify right side
    20,128.68x = 597,733,753.45
  5. Step 5: Solve for x
    x = 597,733,753.45/20,128.68
  6. Step 6: Final answer
    x = 29,695.63

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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.