Home / 13,408.24-18,503.34-8,102.08

Finding the Fourth Proportional to 13,408.24, 18,503.34 and 8,102.08

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Solution

The fourth proportional to 13,408.24, 18,503.34 and 8,102.08 is: 11,180.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.24 : 18,503.34 = 8,102.08 : x
  2. Step 2: Convert to fraction form
    13,408.24/18,503.34 = 8,102.08/x
  3. Step 3: Cross multiply
    13,408.24x = 18,503.34 × 8,102.08
  4. Step 4: Simplify right side
    13,408.24x = 149,915,540.95
  5. Step 5: Solve for x
    x = 149,915,540.95/13,408.24
  6. Step 6: Final answer
    x = 11,180.85

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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.