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Finding the Fourth Proportional to 36,990.38, 51,046.90 and 20,223.38

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Solution

The fourth proportional to 36,990.38, 51,046.90 and 20,223.38 is: 27,908.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,990.38 : 51,046.90 = 20,223.38 : x
  2. Step 2: Convert to fraction form
    36,990.38/51,046.90 = 20,223.38/x
  3. Step 3: Cross multiply
    36,990.38x = 51,046.90 × 20,223.38
  4. Step 4: Simplify right side
    36,990.38x = 1,032,340,550.73
  5. Step 5: Solve for x
    x = 1,032,340,550.73/36,990.38
  6. Step 6: Final answer
    x = 27,908.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.