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Finding the Fourth Proportional to 22,456.20, 33,684.09 and 8,605.20

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Solution

The fourth proportional to 22,456.20, 33,684.09 and 8,605.20 is: 12,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,456.20 : 33,684.09 = 8,605.20 : x
  2. Step 2: Convert to fraction form
    22,456.20/33,684.09 = 8,605.20/x
  3. Step 3: Cross multiply
    22,456.20x = 33,684.09 × 8,605.20
  4. Step 4: Simplify right side
    22,456.20x = 289,858,425.31
  5. Step 5: Solve for x
    x = 289,858,425.31/22,456.20
  6. Step 6: Final answer
    x = 12,907.72

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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.