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Finding the Fourth Proportional to 18,274.56, 27,409.80 and 5,127.44

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Solution

The fourth proportional to 18,274.56, 27,409.80 and 5,127.44 is: 7,690.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.56 : 27,409.80 = 5,127.44 : x
  2. Step 2: Convert to fraction form
    18,274.56/27,409.80 = 5,127.44/x
  3. Step 3: Cross multiply
    18,274.56x = 27,409.80 × 5,127.44
  4. Step 4: Simplify right side
    18,274.56x = 140,542,104.91
  5. Step 5: Solve for x
    x = 140,542,104.91/18,274.56
  6. Step 6: Final answer
    x = 7,690.59

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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.