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Finding the Fourth Proportional to 18,471.99, 27,712.07 and 7,383.90

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Solution

The fourth proportional to 18,471.99, 27,712.07 and 7,383.90 is: 11,077.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.99 : 27,712.07 = 7,383.90 : x
  2. Step 2: Convert to fraction form
    18,471.99/27,712.07 = 7,383.90/x
  3. Step 3: Cross multiply
    18,471.99x = 27,712.07 × 7,383.90
  4. Step 4: Simplify right side
    18,471.99x = 204,623,153.67
  5. Step 5: Solve for x
    x = 204,623,153.67/18,471.99
  6. Step 6: Final answer
    x = 11,077.48

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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.