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Finding the Fourth Proportional to 11,191.32, 16,786.98 and 5,028.12

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Solution

The fourth proportional to 11,191.32, 16,786.98 and 5,028.12 is: 7,542.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.32 : 16,786.98 = 5,028.12 : x
  2. Step 2: Convert to fraction form
    11,191.32/16,786.98 = 5,028.12/x
  3. Step 3: Cross multiply
    11,191.32x = 16,786.98 × 5,028.12
  4. Step 4: Simplify right side
    11,191.32x = 84,406,949.88
  5. Step 5: Solve for x
    x = 84,406,949.88/11,191.32
  6. Step 6: Final answer
    x = 7,542.18

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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.