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Finding the Fourth Proportional to 33,108, 45,689.28 and 18,204

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Solution

The fourth proportional to 33,108, 45,689.28 and 18,204 is: 25,121.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,108 : 45,689.28 = 18,204 : x
  2. Step 2: Convert to fraction form
    33,108/45,689.28 = 18,204/x
  3. Step 3: Cross multiply
    33,108x = 45,689.28 × 18,204
  4. Step 4: Simplify right side
    33,108x = 831,727,653.12
  5. Step 5: Solve for x
    x = 831,727,653.12/33,108
  6. Step 6: Final answer
    x = 25,121.65

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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.