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Finding the Fourth Proportional to 18,376.92, 27,530.60 and 10,857.99

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Solution

The fourth proportional to 18,376.92, 27,530.60 and 10,857.99 is: 16,266.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.92 : 27,530.60 = 10,857.99 : x
  2. Step 2: Convert to fraction form
    18,376.92/27,530.60 = 10,857.99/x
  3. Step 3: Cross multiply
    18,376.92x = 27,530.60 × 10,857.99
  4. Step 4: Simplify right side
    18,376.92x = 298,926,979.49
  5. Step 5: Solve for x
    x = 298,926,979.49/18,376.92
  6. Step 6: Final answer
    x = 16,266.44

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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.