Home / 13,408.67-18,501.27-8,103.79

Finding the Fourth Proportional to 13,408.67, 18,501.27 and 8,103.79

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Solution

The fourth proportional to 13,408.67, 18,501.27 and 8,103.79 is: 11,181.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.67 : 18,501.27 = 8,103.79 : x
  2. Step 2: Convert to fraction form
    13,408.67/18,501.27 = 8,103.79/x
  3. Step 3: Cross multiply
    13,408.67x = 18,501.27 × 8,103.79
  4. Step 4: Simplify right side
    13,408.67x = 149,930,314.31
  5. Step 5: Solve for x
    x = 149,930,314.31/13,408.67
  6. Step 6: Final answer
    x = 11,181.59

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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.