Home / 11,786.78-17,679.74-3,995.60

Finding the Fourth Proportional to 11,786.78, 17,679.74 and 3,995.60

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Solution

The fourth proportional to 11,786.78, 17,679.74 and 3,995.60 is: 5,993.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,786.78 : 17,679.74 = 3,995.60 : x
  2. Step 2: Convert to fraction form
    11,786.78/17,679.74 = 3,995.60/x
  3. Step 3: Cross multiply
    11,786.78x = 17,679.74 × 3,995.60
  4. Step 4: Simplify right side
    11,786.78x = 70,641,060.77
  5. Step 5: Solve for x
    x = 70,641,060.77/11,786.78
  6. Step 6: Final answer
    x = 5,993.24

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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.