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Finding the Fourth Proportional to 18,514, 25,549.86 and 10,131.04

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Solution

The fourth proportional to 18,514, 25,549.86 and 10,131.04 is: 13,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,514 : 25,549.86 = 10,131.04 : x
  2. Step 2: Convert to fraction form
    18,514/25,549.86 = 10,131.04/x
  3. Step 3: Cross multiply
    18,514x = 25,549.86 × 10,131.04
  4. Step 4: Simplify right side
    18,514x = 258,846,653.65
  5. Step 5: Solve for x
    x = 258,846,653.65/18,514
  6. Step 6: Final answer
    x = 13,981.13

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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.