Home / 20,285.20-30,387.30-17,849.80

Finding the Fourth Proportional to 20,285.20, 30,387.30 and 17,849.80

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Solution

The fourth proportional to 20,285.20, 30,387.30 and 17,849.80 is: 26,739.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.20 : 30,387.30 = 17,849.80 : x
  2. Step 2: Convert to fraction form
    20,285.20/30,387.30 = 17,849.80/x
  3. Step 3: Cross multiply
    20,285.20x = 30,387.30 × 17,849.80
  4. Step 4: Simplify right side
    20,285.20x = 542,407,227.54
  5. Step 5: Solve for x
    x = 542,407,227.54/20,285.20
  6. Step 6: Final answer
    x = 26,739.06

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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.