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Finding the Fourth Proportional to 18,118.94, 27,230.24 and 8,891.42

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Solution

The fourth proportional to 18,118.94, 27,230.24 and 8,891.42 is: 13,362.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.94 : 27,230.24 = 8,891.42 : x
  2. Step 2: Convert to fraction form
    18,118.94/27,230.24 = 8,891.42/x
  3. Step 3: Cross multiply
    18,118.94x = 27,230.24 × 8,891.42
  4. Step 4: Simplify right side
    18,118.94x = 242,115,386.62
  5. Step 5: Solve for x
    x = 242,115,386.62/18,118.94
  6. Step 6: Final answer
    x = 13,362.56

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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.