Home / 18,163.72-27,245.60-7,768.20

Finding the Fourth Proportional to 18,163.72, 27,245.60 and 7,768.20

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Solution

The fourth proportional to 18,163.72, 27,245.60 and 7,768.20 is: 11,652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.72 : 27,245.60 = 7,768.20 : x
  2. Step 2: Convert to fraction form
    18,163.72/27,245.60 = 7,768.20/x
  3. Step 3: Cross multiply
    18,163.72x = 27,245.60 × 7,768.20
  4. Step 4: Simplify right side
    18,163.72x = 211,649,269.92
  5. Step 5: Solve for x
    x = 211,649,269.92/18,163.72
  6. Step 6: Final answer
    x = 11,652.31

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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.