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Finding the Fourth Proportional to 18,992.88, 28,481.04 and 5,838

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Solution

The fourth proportional to 18,992.88, 28,481.04 and 5,838 is: 8,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.88 : 28,481.04 = 5,838 : x
  2. Step 2: Convert to fraction form
    18,992.88/28,481.04 = 5,838/x
  3. Step 3: Cross multiply
    18,992.88x = 28,481.04 × 5,838
  4. Step 4: Simplify right side
    18,992.88x = 166,272,311.52
  5. Step 5: Solve for x
    x = 166,272,311.52/18,992.88
  6. Step 6: Final answer
    x = 8,754.45

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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.