Home / 13,408.20-18,508.91-8,101.69

Finding the Fourth Proportional to 13,408.20, 18,508.91 and 8,101.69

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Solution

The fourth proportional to 13,408.20, 18,508.91 and 8,101.69 is: 11,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.20 : 18,508.91 = 8,101.69 : x
  2. Step 2: Convert to fraction form
    13,408.20/18,508.91 = 8,101.69/x
  3. Step 3: Cross multiply
    13,408.20x = 18,508.91 × 8,101.69
  4. Step 4: Simplify right side
    13,408.20x = 149,953,364.28
  5. Step 5: Solve for x
    x = 149,953,364.28/13,408.20
  6. Step 6: Final answer
    x = 11,183.71

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1.5x scale

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.