Home / 11,408.40-17,115.60-3,617.20

Finding the Fourth Proportional to 11,408.40, 17,115.60 and 3,617.20

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Solution

The fourth proportional to 11,408.40, 17,115.60 and 3,617.20 is: 5,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,408.40 : 17,115.60 = 3,617.20 : x
  2. Step 2: Convert to fraction form
    11,408.40/17,115.60 = 3,617.20/x
  3. Step 3: Cross multiply
    11,408.40x = 17,115.60 × 3,617.20
  4. Step 4: Simplify right side
    11,408.40x = 61,910,548.32
  5. Step 5: Solve for x
    x = 61,910,548.32/11,408.40
  6. Step 6: Final answer
    x = 5,426.75

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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.