Home / 18,122.45-27,180.48-4,971.65

Finding the Fourth Proportional to 18,122.45, 27,180.48 and 4,971.65

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Solution

The fourth proportional to 18,122.45, 27,180.48 and 4,971.65 is: 7,456.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.45 : 27,180.48 = 4,971.65 : x
  2. Step 2: Convert to fraction form
    18,122.45/27,180.48 = 4,971.65/x
  3. Step 3: Cross multiply
    18,122.45x = 27,180.48 × 4,971.65
  4. Step 4: Simplify right side
    18,122.45x = 135,131,833.39
  5. Step 5: Solve for x
    x = 135,131,833.39/18,122.45
  6. Step 6: Final answer
    x = 7,456.60

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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.