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Finding the Fourth Proportional to 18,379.47, 27,572.08 and 7,849.54

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Solution

The fourth proportional to 18,379.47, 27,572.08 and 7,849.54 is: 11,775.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.47 : 27,572.08 = 7,849.54 : x
  2. Step 2: Convert to fraction form
    18,379.47/27,572.08 = 7,849.54/x
  3. Step 3: Cross multiply
    18,379.47x = 27,572.08 × 7,849.54
  4. Step 4: Simplify right side
    18,379.47x = 216,428,164.47
  5. Step 5: Solve for x
    x = 216,428,164.47/18,379.47
  6. Step 6: Final answer
    x = 11,775.54

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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.