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Finding the Fourth Proportional to 22,115.25, 30,519.05 and 12,179.25

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Solution

The fourth proportional to 22,115.25, 30,519.05 and 12,179.25 is: 16,807.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.25 : 30,519.05 = 12,179.25 : x
  2. Step 2: Convert to fraction form
    22,115.25/30,519.05 = 12,179.25/x
  3. Step 3: Cross multiply
    22,115.25x = 30,519.05 × 12,179.25
  4. Step 4: Simplify right side
    22,115.25x = 371,699,078.82
  5. Step 5: Solve for x
    x = 371,699,078.82/22,115.25
  6. Step 6: Final answer
    x = 16,807.37

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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.