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Finding the Fourth Proportional to 18,565.89, 27,848.37 and 5,418.37

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Solution

The fourth proportional to 18,565.89, 27,848.37 and 5,418.37 is: 8,127.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.89 : 27,848.37 = 5,418.37 : x
  2. Step 2: Convert to fraction form
    18,565.89/27,848.37 = 5,418.37/x
  3. Step 3: Cross multiply
    18,565.89x = 27,848.37 × 5,418.37
  4. Step 4: Simplify right side
    18,565.89x = 150,892,797.21
  5. Step 5: Solve for x
    x = 150,892,797.21/18,565.89
  6. Step 6: Final answer
    x = 8,127.42

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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.