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Finding the Fourth Proportional to 11,919.17, 17,950.13 and 10,855.09

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Solution

The fourth proportional to 11,919.17, 17,950.13 and 10,855.09 is: 16,347.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.17 : 17,950.13 = 10,855.09 : x
  2. Step 2: Convert to fraction form
    11,919.17/17,950.13 = 10,855.09/x
  3. Step 3: Cross multiply
    11,919.17x = 17,950.13 × 10,855.09
  4. Step 4: Simplify right side
    11,919.17x = 194,850,181.37
  5. Step 5: Solve for x
    x = 194,850,181.37/11,919.17
  6. Step 6: Final answer
    x = 16,347.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.