Home / 10,121.44-15,179.71-5,188.54

Finding the Fourth Proportional to 10,121.44, 15,179.71 and 5,188.54

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Solution

The fourth proportional to 10,121.44, 15,179.71 and 5,188.54 is: 7,781.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.44 : 15,179.71 = 5,188.54 : x
  2. Step 2: Convert to fraction form
    10,121.44/15,179.71 = 5,188.54/x
  3. Step 3: Cross multiply
    10,121.44x = 15,179.71 × 5,188.54
  4. Step 4: Simplify right side
    10,121.44x = 78,760,532.52
  5. Step 5: Solve for x
    x = 78,760,532.52/10,121.44
  6. Step 6: Final answer
    x = 7,781.55

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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.