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Finding the Fourth Proportional to 22,020.26, 33,021.90 and 7,976.12

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Solution

The fourth proportional to 22,020.26, 33,021.90 and 7,976.12 is: 11,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,020.26 : 33,021.90 = 7,976.12 : x
  2. Step 2: Convert to fraction form
    22,020.26/33,021.90 = 7,976.12/x
  3. Step 3: Cross multiply
    22,020.26x = 33,021.90 × 7,976.12
  4. Step 4: Simplify right side
    22,020.26x = 263,386,471.92
  5. Step 5: Solve for x
    x = 263,386,471.92/22,020.26
  6. Step 6: Final answer
    x = 11,961.10

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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.