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Finding the Fourth Proportional to 27,115.88, 37,420.74 and 15,179.16

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Solution

The fourth proportional to 27,115.88, 37,420.74 and 15,179.16 is: 20,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,115.88 : 37,420.74 = 15,179.16 : x
  2. Step 2: Convert to fraction form
    27,115.88/37,420.74 = 15,179.16/x
  3. Step 3: Cross multiply
    27,115.88x = 37,420.74 × 15,179.16
  4. Step 4: Simplify right side
    27,115.88x = 568,015,399.78
  5. Step 5: Solve for x
    x = 568,015,399.78/27,115.88
  6. Step 6: Final answer
    x = 20,947.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.