Home / 12,108.72-18,163.38-3,343.68

Finding the Fourth Proportional to 12,108.72, 18,163.38 and 3,343.68

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Solution

The fourth proportional to 12,108.72, 18,163.38 and 3,343.68 is: 5,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.72 : 18,163.38 = 3,343.68 : x
  2. Step 2: Convert to fraction form
    12,108.72/18,163.38 = 3,343.68/x
  3. Step 3: Cross multiply
    12,108.72x = 18,163.38 × 3,343.68
  4. Step 4: Simplify right side
    12,108.72x = 60,732,530.44
  5. Step 5: Solve for x
    x = 60,732,530.44/12,108.72
  6. Step 6: Final answer
    x = 5,015.60

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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.