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Finding the Fourth Proportional to 11,186, 15,436.69 and 6,218

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Solution

The fourth proportional to 11,186, 15,436.69 and 6,218 is: 8,580.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,186 : 15,436.69 = 6,218 : x
  2. Step 2: Convert to fraction form
    11,186/15,436.69 = 6,218/x
  3. Step 3: Cross multiply
    11,186x = 15,436.69 × 6,218
  4. Step 4: Simplify right side
    11,186x = 95,985,338.42
  5. Step 5: Solve for x
    x = 95,985,338.42/11,186
  6. Step 6: Final answer
    x = 8,580.85

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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.