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Finding the Fourth Proportional to 13,396.66, 20,067.62 and 11,431.13

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Solution

The fourth proportional to 13,396.66, 20,067.62 and 11,431.13 is: 17,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.66 : 20,067.62 = 11,431.13 : x
  2. Step 2: Convert to fraction form
    13,396.66/20,067.62 = 11,431.13/x
  3. Step 3: Cross multiply
    13,396.66x = 20,067.62 × 11,431.13
  4. Step 4: Simplify right side
    13,396.66x = 229,395,415.52
  5. Step 5: Solve for x
    x = 229,395,415.52/13,396.66
  6. Step 6: Final answer
    x = 17,123.33

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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.