Home / 20,233.36-27,912.11-13,520.64

Finding the Fourth Proportional to 20,233.36, 27,912.11 and 13,520.64

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Solution

The fourth proportional to 20,233.36, 27,912.11 and 13,520.64 is: 18,651.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,233.36 : 27,912.11 = 13,520.64 : x
  2. Step 2: Convert to fraction form
    20,233.36/27,912.11 = 13,520.64/x
  3. Step 3: Cross multiply
    20,233.36x = 27,912.11 × 13,520.64
  4. Step 4: Simplify right side
    20,233.36x = 377,389,590.95
  5. Step 5: Solve for x
    x = 377,389,590.95/20,233.36
  6. Step 6: Final answer
    x = 18,651.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.