Home / 20,226.20-30,339.30-18,087.80

Finding the Fourth Proportional to 20,226.20, 30,339.30 and 18,087.80

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Solution

The fourth proportional to 20,226.20, 30,339.30 and 18,087.80 is: 27,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.20 : 30,339.30 = 18,087.80 : x
  2. Step 2: Convert to fraction form
    20,226.20/30,339.30 = 18,087.80/x
  3. Step 3: Cross multiply
    20,226.20x = 30,339.30 × 18,087.80
  4. Step 4: Simplify right side
    20,226.20x = 548,771,190.54
  5. Step 5: Solve for x
    x = 548,771,190.54/20,226.20
  6. Step 6: Final answer
    x = 27,131.70

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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.