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Finding the Fourth Proportional to 19,992, 27,591.39 and 11,608.50

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Solution

The fourth proportional to 19,992, 27,591.39 and 11,608.50 is: 16,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992 : 27,591.39 = 11,608.50 : x
  2. Step 2: Convert to fraction form
    19,992/27,591.39 = 11,608.50/x
  3. Step 3: Cross multiply
    19,992x = 27,591.39 × 11,608.50
  4. Step 4: Simplify right side
    19,992x = 320,294,650.82
  5. Step 5: Solve for x
    x = 320,294,650.82/19,992
  6. Step 6: Final answer
    x = 16,021.14

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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.