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Finding the Fourth Proportional to 33,272, 45,915.42 and 18,368

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Solution

The fourth proportional to 33,272, 45,915.42 and 18,368 is: 25,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,272 : 45,915.42 = 18,368 : x
  2. Step 2: Convert to fraction form
    33,272/45,915.42 = 18,368/x
  3. Step 3: Cross multiply
    33,272x = 45,915.42 × 18,368
  4. Step 4: Simplify right side
    33,272x = 843,374,434.56
  5. Step 5: Solve for x
    x = 843,374,434.56/33,272
  6. Step 6: Final answer
    x = 25,347.87

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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.