Home / 11,723.82-16,178.81-6,418.64

Finding the Fourth Proportional to 11,723.82, 16,178.81 and 6,418.64

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Solution

The fourth proportional to 11,723.82, 16,178.81 and 6,418.64 is: 8,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,723.82 : 16,178.81 = 6,418.64 : x
  2. Step 2: Convert to fraction form
    11,723.82/16,178.81 = 6,418.64/x
  3. Step 3: Cross multiply
    11,723.82x = 16,178.81 × 6,418.64
  4. Step 4: Simplify right side
    11,723.82x = 103,845,844.03
  5. Step 5: Solve for x
    x = 103,845,844.03/11,723.82
  6. Step 6: Final answer
    x = 8,857.68

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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.