Home / 12,215.88-18,325.17-3,896.28

Finding the Fourth Proportional to 12,215.88, 18,325.17 and 3,896.28

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Solution

The fourth proportional to 12,215.88, 18,325.17 and 3,896.28 is: 5,844.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.88 : 18,325.17 = 3,896.28 : x
  2. Step 2: Convert to fraction form
    12,215.88/18,325.17 = 3,896.28/x
  3. Step 3: Cross multiply
    12,215.88x = 18,325.17 × 3,896.28
  4. Step 4: Simplify right side
    12,215.88x = 71,399,993.37
  5. Step 5: Solve for x
    x = 71,399,993.37/12,215.88
  6. Step 6: Final answer
    x = 5,844.85

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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.