Home / 19,321.31-28,976.61-6,839.69

Finding the Fourth Proportional to 19,321.31, 28,976.61 and 6,839.69

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Solution

The fourth proportional to 19,321.31, 28,976.61 and 6,839.69 is: 10,257.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.31 : 28,976.61 = 6,839.69 : x
  2. Step 2: Convert to fraction form
    19,321.31/28,976.61 = 6,839.69/x
  3. Step 3: Cross multiply
    19,321.31x = 28,976.61 × 6,839.69
  4. Step 4: Simplify right side
    19,321.31x = 198,190,850.57
  5. Step 5: Solve for x
    x = 198,190,850.57/19,321.31
  6. Step 6: Final answer
    x = 10,257.63

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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.