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Finding the Fourth Proportional to 18,359.79, 27,540.29 and 11,260.54

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Solution

The fourth proportional to 18,359.79, 27,540.29 and 11,260.54 is: 16,891.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.79 : 27,540.29 = 11,260.54 : x
  2. Step 2: Convert to fraction form
    18,359.79/27,540.29 = 11,260.54/x
  3. Step 3: Cross multiply
    18,359.79x = 27,540.29 × 11,260.54
  4. Step 4: Simplify right side
    18,359.79x = 310,118,537.16
  5. Step 5: Solve for x
    x = 310,118,537.16/18,359.79
  6. Step 6: Final answer
    x = 16,891.18

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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.