Home / 18,111.93-27,138.73-11,171.85

Finding the Fourth Proportional to 18,111.93, 27,138.73 and 11,171.85

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Solution

The fourth proportional to 18,111.93, 27,138.73 and 11,171.85 is: 16,739.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,111.93 : 27,138.73 = 11,171.85 : x
  2. Step 2: Convert to fraction form
    18,111.93/27,138.73 = 11,171.85/x
  3. Step 3: Cross multiply
    18,111.93x = 27,138.73 × 11,171.85
  4. Step 4: Simplify right side
    18,111.93x = 303,189,820.75
  5. Step 5: Solve for x
    x = 303,189,820.75/18,111.93
  6. Step 6: Final answer
    x = 16,739.79

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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.