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Finding the Fourth Proportional to 20,786.69, 31,180.14 and 5,995.69

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Solution

The fourth proportional to 20,786.69, 31,180.14 and 5,995.69 is: 8,993.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.69 : 31,180.14 = 5,995.69 : x
  2. Step 2: Convert to fraction form
    20,786.69/31,180.14 = 5,995.69/x
  3. Step 3: Cross multiply
    20,786.69x = 31,180.14 × 5,995.69
  4. Step 4: Simplify right side
    20,786.69x = 186,946,375.65
  5. Step 5: Solve for x
    x = 186,946,375.65/20,786.69
  6. Step 6: Final answer
    x = 8,993.56

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1.5x scale

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.