Home / 13,408.70-18,486.39-11,540.33

Finding the Fourth Proportional to 13,408.70, 18,486.39 and 11,540.33

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Solution

The fourth proportional to 13,408.70, 18,486.39 and 11,540.33 is: 15,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.70 : 18,486.39 = 11,540.33 : x
  2. Step 2: Convert to fraction form
    13,408.70/18,486.39 = 11,540.33/x
  3. Step 3: Cross multiply
    13,408.70x = 18,486.39 × 11,540.33
  4. Step 4: Simplify right side
    13,408.70x = 213,339,061.28
  5. Step 5: Solve for x
    x = 213,339,061.28/13,408.70
  6. Step 6: Final answer
    x = 15,910.50

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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.