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Finding the Fourth Proportional to 29,167, 40,250.46 and 15,919

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Solution

The fourth proportional to 29,167, 40,250.46 and 15,919 is: 21,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,167 : 40,250.46 = 15,919 : x
  2. Step 2: Convert to fraction form
    29,167/40,250.46 = 15,919/x
  3. Step 3: Cross multiply
    29,167x = 40,250.46 × 15,919
  4. Step 4: Simplify right side
    29,167x = 640,747,072.74
  5. Step 5: Solve for x
    x = 640,747,072.74/29,167
  6. Step 6: Final answer
    x = 21,968.22

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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.