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Finding the Fourth Proportional to 20,359.27, 28,096.94 and 11,409.65

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Solution

The fourth proportional to 20,359.27, 28,096.94 and 11,409.65 is: 15,745.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.27 : 28,096.94 = 11,409.65 : x
  2. Step 2: Convert to fraction form
    20,359.27/28,096.94 = 11,409.65/x
  3. Step 3: Cross multiply
    20,359.27x = 28,096.94 × 11,409.65
  4. Step 4: Simplify right side
    20,359.27x = 320,576,194.42
  5. Step 5: Solve for x
    x = 320,576,194.42/20,359.27
  6. Step 6: Final answer
    x = 15,745.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.