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Finding the Fourth Proportional to 27,186.66, 40,765.41 and 12,391.61

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Solution

The fourth proportional to 27,186.66, 40,765.41 and 12,391.61 is: 18,580.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,186.66 : 40,765.41 = 12,391.61 : x
  2. Step 2: Convert to fraction form
    27,186.66/40,765.41 = 12,391.61/x
  3. Step 3: Cross multiply
    27,186.66x = 40,765.41 × 12,391.61
  4. Step 4: Simplify right side
    27,186.66x = 505,148,858.38
  5. Step 5: Solve for x
    x = 505,148,858.38/27,186.66
  6. Step 6: Final answer
    x = 18,580.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.