Home / 12,216.87-18,328.28-3,896.88

Finding the Fourth Proportional to 12,216.87, 18,328.28 and 3,896.88

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Solution

The fourth proportional to 12,216.87, 18,328.28 and 3,896.88 is: 5,846.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.87 : 18,328.28 = 3,896.88 : x
  2. Step 2: Convert to fraction form
    12,216.87/18,328.28 = 3,896.88/x
  3. Step 3: Cross multiply
    12,216.87x = 18,328.28 × 3,896.88
  4. Step 4: Simplify right side
    12,216.87x = 71,423,163.33
  5. Step 5: Solve for x
    x = 71,423,163.33/12,216.87
  6. Step 6: Final answer
    x = 5,846.28

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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.