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Finding the Fourth Proportional to 18,403.08, 25,387.62 and 11,326.92

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Solution

The fourth proportional to 18,403.08, 25,387.62 and 11,326.92 is: 15,625.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.08 : 25,387.62 = 11,326.92 : x
  2. Step 2: Convert to fraction form
    18,403.08/25,387.62 = 11,326.92/x
  3. Step 3: Cross multiply
    18,403.08x = 25,387.62 × 11,326.92
  4. Step 4: Simplify right side
    18,403.08x = 287,563,540.73
  5. Step 5: Solve for x
    x = 287,563,540.73/18,403.08
  6. Step 6: Final answer
    x = 15,625.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.