Home / 11,169.28-15,408.69-6,919.21

Finding the Fourth Proportional to 11,169.28, 15,408.69 and 6,919.21

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Solution

The fourth proportional to 11,169.28, 15,408.69 and 6,919.21 is: 9,545.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.28 : 15,408.69 = 6,919.21 : x
  2. Step 2: Convert to fraction form
    11,169.28/15,408.69 = 6,919.21/x
  3. Step 3: Cross multiply
    11,169.28x = 15,408.69 × 6,919.21
  4. Step 4: Simplify right side
    11,169.28x = 106,615,961.93
  5. Step 5: Solve for x
    x = 106,615,961.93/11,169.28
  6. Step 6: Final answer
    x = 9,545.46

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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.