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Finding the Fourth Proportional to 15,939, 23,912.34 and 4,995

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Solution

The fourth proportional to 15,939, 23,912.34 and 4,995 is: 7,493.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939 : 23,912.34 = 4,995 : x
  2. Step 2: Convert to fraction form
    15,939/23,912.34 = 4,995/x
  3. Step 3: Cross multiply
    15,939x = 23,912.34 × 4,995
  4. Step 4: Simplify right side
    15,939x = 119,442,138.30
  5. Step 5: Solve for x
    x = 119,442,138.30/15,939
  6. Step 6: Final answer
    x = 7,493.70

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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.