Home / 13,408.74-18,504.03-8,102.58

Finding the Fourth Proportional to 13,408.74, 18,504.03 and 8,102.58

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Solution

The fourth proportional to 13,408.74, 18,504.03 and 8,102.58 is: 11,181.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.74 : 18,504.03 = 8,102.58 : x
  2. Step 2: Convert to fraction form
    13,408.74/18,504.03 = 8,102.58/x
  3. Step 3: Cross multiply
    13,408.74x = 18,504.03 × 8,102.58
  4. Step 4: Simplify right side
    13,408.74x = 149,930,383.40
  5. Step 5: Solve for x
    x = 149,930,383.40/13,408.74
  6. Step 6: Final answer
    x = 11,181.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.