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Finding the Fourth Proportional to 36,287.40, 54,363.90 and 20,658.60

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Solution

The fourth proportional to 36,287.40, 54,363.90 and 20,658.60 is: 30,949.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,287.40 : 54,363.90 = 20,658.60 : x
  2. Step 2: Convert to fraction form
    36,287.40/54,363.90 = 20,658.60/x
  3. Step 3: Cross multiply
    36,287.40x = 54,363.90 × 20,658.60
  4. Step 4: Simplify right side
    36,287.40x = 1,123,082,064.54
  5. Step 5: Solve for x
    x = 1,123,082,064.54/36,287.40
  6. Step 6: Final answer
    x = 30,949.64

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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.