Home / 12,258.12-18,380.19-11,213.22

Finding the Fourth Proportional to 12,258.12, 18,380.19 and 11,213.22

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Solution

The fourth proportional to 12,258.12, 18,380.19 and 11,213.22 is: 16,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258.12 : 18,380.19 = 11,213.22 : x
  2. Step 2: Convert to fraction form
    12,258.12/18,380.19 = 11,213.22/x
  3. Step 3: Cross multiply
    12,258.12x = 18,380.19 × 11,213.22
  4. Step 4: Simplify right side
    12,258.12x = 206,101,114.11
  5. Step 5: Solve for x
    x = 206,101,114.11/12,258.12
  6. Step 6: Final answer
    x = 16,813.44

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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.