Home / 20,128.31-30,197.21-19,793.60

Finding the Fourth Proportional to 20,128.31, 30,197.21 and 19,793.60

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Solution

The fourth proportional to 20,128.31, 30,197.21 and 19,793.60 is: 29,695.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.31 : 30,197.21 = 19,793.60 : x
  2. Step 2: Convert to fraction form
    20,128.31/30,197.21 = 19,793.60/x
  3. Step 3: Cross multiply
    20,128.31x = 30,197.21 × 19,793.60
  4. Step 4: Simplify right side
    20,128.31x = 597,711,321.39
  5. Step 5: Solve for x
    x = 597,711,321.39/20,128.31
  6. Step 6: Final answer
    x = 29,695.06

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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.