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Finding the Fourth Proportional to 18,190.80, 27,271.68 and 10,288.44

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Solution

The fourth proportional to 18,190.80, 27,271.68 and 10,288.44 is: 15,424.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,190.80 : 27,271.68 = 10,288.44 : x
  2. Step 2: Convert to fraction form
    18,190.80/27,271.68 = 10,288.44/x
  3. Step 3: Cross multiply
    18,190.80x = 27,271.68 × 10,288.44
  4. Step 4: Simplify right side
    18,190.80x = 280,583,043.38
  5. Step 5: Solve for x
    x = 280,583,043.38/18,190.80
  6. Step 6: Final answer
    x = 15,424.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.