Home / 18,216.20-27,324.30-12,686.60

Finding the Fourth Proportional to 18,216.20, 27,324.30 and 12,686.60

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Solution

The fourth proportional to 18,216.20, 27,324.30 and 12,686.60 is: 19,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.20 : 27,324.30 = 12,686.60 : x
  2. Step 2: Convert to fraction form
    18,216.20/27,324.30 = 12,686.60/x
  3. Step 3: Cross multiply
    18,216.20x = 27,324.30 × 12,686.60
  4. Step 4: Simplify right side
    18,216.20x = 346,652,464.38
  5. Step 5: Solve for x
    x = 346,652,464.38/18,216.20
  6. Step 6: Final answer
    x = 19,029.90

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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.