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Finding the Fourth Proportional to 22,166.72, 33,276 and 18,512

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Solution

The fourth proportional to 22,166.72, 33,276 and 18,512 is: 27,789.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,166.72 : 33,276 = 18,512 : x
  2. Step 2: Convert to fraction form
    22,166.72/33,276 = 18,512/x
  3. Step 3: Cross multiply
    22,166.72x = 33,276 × 18,512
  4. Step 4: Simplify right side
    22,166.72x = 616,005,312
  5. Step 5: Solve for x
    x = 616,005,312/22,166.72
  6. Step 6: Final answer
    x = 27,789.65

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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.