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Finding the Fourth Proportional to 18,751.44, 25,879.56 and 11,298

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Solution

The fourth proportional to 18,751.44, 25,879.56 and 11,298 is: 15,592.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.44 : 25,879.56 = 11,298 : x
  2. Step 2: Convert to fraction form
    18,751.44/25,879.56 = 11,298/x
  3. Step 3: Cross multiply
    18,751.44x = 25,879.56 × 11,298
  4. Step 4: Simplify right side
    18,751.44x = 292,387,268.88
  5. Step 5: Solve for x
    x = 292,387,268.88/18,751.44
  6. Step 6: Final answer
    x = 15,592.79

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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.