Home / 20,234.40-30,338.40-18,160.80

Finding the Fourth Proportional to 20,234.40, 30,338.40 and 18,160.80

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Solution

The fourth proportional to 20,234.40, 30,338.40 and 18,160.80 is: 27,229.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.40 : 30,338.40 = 18,160.80 : x
  2. Step 2: Convert to fraction form
    20,234.40/30,338.40 = 18,160.80/x
  3. Step 3: Cross multiply
    20,234.40x = 30,338.40 × 18,160.80
  4. Step 4: Simplify right side
    20,234.40x = 550,969,614.72
  5. Step 5: Solve for x
    x = 550,969,614.72/20,234.40
  6. Step 6: Final answer
    x = 27,229.35

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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.