Home / 12,419.21-18,631.43-3,653.39

Finding the Fourth Proportional to 12,419.21, 18,631.43 and 3,653.39

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Solution

The fourth proportional to 12,419.21, 18,631.43 and 3,653.39 is: 5,480.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.21 : 18,631.43 = 3,653.39 : x
  2. Step 2: Convert to fraction form
    12,419.21/18,631.43 = 3,653.39/x
  3. Step 3: Cross multiply
    12,419.21x = 18,631.43 × 3,653.39
  4. Step 4: Simplify right side
    12,419.21x = 68,067,861.78
  5. Step 5: Solve for x
    x = 68,067,861.78/12,419.21
  6. Step 6: Final answer
    x = 5,480.85

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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.