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Finding the Fourth Proportional to 18,375.17, 27,548.17 and 7,979.63

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Solution

The fourth proportional to 18,375.17, 27,548.17 and 7,979.63 is: 11,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.17 : 27,548.17 = 7,979.63 : x
  2. Step 2: Convert to fraction form
    18,375.17/27,548.17 = 7,979.63/x
  3. Step 3: Cross multiply
    18,375.17x = 27,548.17 × 7,979.63
  4. Step 4: Simplify right side
    18,375.17x = 219,824,046.09
  5. Step 5: Solve for x
    x = 219,824,046.09/18,375.17
  6. Step 6: Final answer
    x = 11,963.11

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1.5x scale

Why These Related Problems?

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