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Finding the Fourth Proportional to 11,169.41, 15,408.87 and 6,919.34

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Solution

The fourth proportional to 11,169.41, 15,408.87 and 6,919.34 is: 9,545.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.41 : 15,408.87 = 6,919.34 : x
  2. Step 2: Convert to fraction form
    11,169.41/15,408.87 = 6,919.34/x
  3. Step 3: Cross multiply
    11,169.41x = 15,408.87 × 6,919.34
  4. Step 4: Simplify right side
    11,169.41x = 106,619,107.55
  5. Step 5: Solve for x
    x = 106,619,107.55/11,169.41
  6. Step 6: Final answer
    x = 9,545.64

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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.