Home / 11,990.87-17,975.34-4,195.43

Finding the Fourth Proportional to 11,990.87, 17,975.34 and 4,195.43

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Solution

The fourth proportional to 11,990.87, 17,975.34 and 4,195.43 is: 6,289.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.87 : 17,975.34 = 4,195.43 : x
  2. Step 2: Convert to fraction form
    11,990.87/17,975.34 = 4,195.43/x
  3. Step 3: Cross multiply
    11,990.87x = 17,975.34 × 4,195.43
  4. Step 4: Simplify right side
    11,990.87x = 75,414,190.82
  5. Step 5: Solve for x
    x = 75,414,190.82/11,990.87
  6. Step 6: Final answer
    x = 6,289.30

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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.