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Finding the Fourth Proportional to 18,326.63, 25,290.83 and 9,943.13

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Solution

The fourth proportional to 18,326.63, 25,290.83 and 9,943.13 is: 13,721.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.63 : 25,290.83 = 9,943.13 : x
  2. Step 2: Convert to fraction form
    18,326.63/25,290.83 = 9,943.13/x
  3. Step 3: Cross multiply
    18,326.63x = 25,290.83 × 9,943.13
  4. Step 4: Simplify right side
    18,326.63x = 251,469,960.78
  5. Step 5: Solve for x
    x = 251,469,960.78/18,326.63
  6. Step 6: Final answer
    x = 13,721.56

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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.