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Finding the Fourth Proportional to 12,168, 16,791.84 and 6,579

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Solution

The fourth proportional to 12,168, 16,791.84 and 6,579 is: 9,079.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168 : 16,791.84 = 6,579 : x
  2. Step 2: Convert to fraction form
    12,168/16,791.84 = 6,579/x
  3. Step 3: Cross multiply
    12,168x = 16,791.84 × 6,579
  4. Step 4: Simplify right side
    12,168x = 110,473,515.36
  5. Step 5: Solve for x
    x = 110,473,515.36/12,168
  6. Step 6: Final answer
    x = 9,079.02

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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.