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Finding the Fourth Proportional to 18,270.92, 27,409.24 and 7,740.96

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Solution

The fourth proportional to 18,270.92, 27,409.24 and 7,740.96 is: 11,612.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.92 : 27,409.24 = 7,740.96 : x
  2. Step 2: Convert to fraction form
    18,270.92/27,409.24 = 7,740.96/x
  3. Step 3: Cross multiply
    18,270.92x = 27,409.24 × 7,740.96
  4. Step 4: Simplify right side
    18,270.92x = 212,173,830.47
  5. Step 5: Solve for x
    x = 212,173,830.47/18,270.92
  6. Step 6: Final answer
    x = 11,612.65

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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.