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Finding the Fourth Proportional to 18,241.61, 27,362.41 and 4,390.61

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Solution

The fourth proportional to 18,241.61, 27,362.41 and 4,390.61 is: 6,585.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.61 : 27,362.41 = 4,390.61 : x
  2. Step 2: Convert to fraction form
    18,241.61/27,362.41 = 4,390.61/x
  3. Step 3: Cross multiply
    18,241.61x = 27,362.41 × 4,390.61
  4. Step 4: Simplify right side
    18,241.61x = 120,137,523.18
  5. Step 5: Solve for x
    x = 120,137,523.18/18,241.61
  6. Step 6: Final answer
    x = 6,585.91

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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.