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Finding the Fourth Proportional to 11,163.78, 16,741.08 and 4,144.20

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Solution

The fourth proportional to 11,163.78, 16,741.08 and 4,144.20 is: 6,214.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.78 : 16,741.08 = 4,144.20 : x
  2. Step 2: Convert to fraction form
    11,163.78/16,741.08 = 4,144.20/x
  3. Step 3: Cross multiply
    11,163.78x = 16,741.08 × 4,144.20
  4. Step 4: Simplify right side
    11,163.78x = 69,378,383.74
  5. Step 5: Solve for x
    x = 69,378,383.74/11,163.78
  6. Step 6: Final answer
    x = 6,214.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.