Home / 20,786.46-31,171.61-6,743.09

Finding the Fourth Proportional to 20,786.46, 31,171.61 and 6,743.09

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Solution

The fourth proportional to 20,786.46, 31,171.61 and 6,743.09 is: 10,112.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.46 : 31,171.61 = 6,743.09 : x
  2. Step 2: Convert to fraction form
    20,786.46/31,171.61 = 6,743.09/x
  3. Step 3: Cross multiply
    20,786.46x = 31,171.61 × 6,743.09
  4. Step 4: Simplify right side
    20,786.46x = 210,193,015.89
  5. Step 5: Solve for x
    x = 210,193,015.89/20,786.46
  6. Step 6: Final answer
    x = 10,112.02

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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.