Home / 13,408.86-18,508.11-8,104.08

Finding the Fourth Proportional to 13,408.86, 18,508.11 and 8,104.08

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Solution

The fourth proportional to 13,408.86, 18,508.11 and 8,104.08 is: 11,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.86 : 18,508.11 = 8,104.08 : x
  2. Step 2: Convert to fraction form
    13,408.86/18,508.11 = 8,104.08/x
  3. Step 3: Cross multiply
    13,408.86x = 18,508.11 × 8,104.08
  4. Step 4: Simplify right side
    13,408.86x = 149,991,204.09
  5. Step 5: Solve for x
    x = 149,991,204.09/13,408.86
  6. Step 6: Final answer
    x = 11,185.98

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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.