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Finding the Fourth Proportional to 18,404.25, 27,605.79 and 5,256.65

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Solution

The fourth proportional to 18,404.25, 27,605.79 and 5,256.65 is: 7,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.25 : 27,605.79 = 5,256.65 : x
  2. Step 2: Convert to fraction form
    18,404.25/27,605.79 = 5,256.65/x
  3. Step 3: Cross multiply
    18,404.25x = 27,605.79 × 5,256.65
  4. Step 4: Simplify right side
    18,404.25x = 145,113,837.97
  5. Step 5: Solve for x
    x = 145,113,837.97/18,404.25
  6. Step 6: Final answer
    x = 7,884.80

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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.