Home / 12,183.82-18,276.64-3,419.42

Finding the Fourth Proportional to 12,183.82, 18,276.64 and 3,419.42

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Solution

The fourth proportional to 12,183.82, 18,276.64 and 3,419.42 is: 5,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.82 : 18,276.64 = 3,419.42 : x
  2. Step 2: Convert to fraction form
    12,183.82/18,276.64 = 3,419.42/x
  3. Step 3: Cross multiply
    12,183.82x = 18,276.64 × 3,419.42
  4. Step 4: Simplify right side
    12,183.82x = 62,495,408.42
  5. Step 5: Solve for x
    x = 62,495,408.42/12,183.82
  6. Step 6: Final answer
    x = 5,129.38

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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.