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Finding the Fourth Proportional to 22,299, 30,771.78 and 12,227.20

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Solution

The fourth proportional to 22,299, 30,771.78 and 12,227.20 is: 16,873.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,299 : 30,771.78 = 12,227.20 : x
  2. Step 2: Convert to fraction form
    22,299/30,771.78 = 12,227.20/x
  3. Step 3: Cross multiply
    22,299x = 30,771.78 × 12,227.20
  4. Step 4: Simplify right side
    22,299x = 376,252,708.42
  5. Step 5: Solve for x
    x = 376,252,708.42/22,299
  6. Step 6: Final answer
    x = 16,873.08

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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.