Home / 11,161.26-15,401.75-8,189.64

Finding the Fourth Proportional to 11,161.26, 15,401.75 and 8,189.64

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Solution

The fourth proportional to 11,161.26, 15,401.75 and 8,189.64 is: 11,301.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.26 : 15,401.75 = 8,189.64 : x
  2. Step 2: Convert to fraction form
    11,161.26/15,401.75 = 8,189.64/x
  3. Step 3: Cross multiply
    11,161.26x = 15,401.75 × 8,189.64
  4. Step 4: Simplify right side
    11,161.26x = 126,134,746.92
  5. Step 5: Solve for x
    x = 126,134,746.92/11,161.26
  6. Step 6: Final answer
    x = 11,301.12

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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.