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Finding the Fourth Proportional to 13,201.80, 18,218.43 and 7,233.84

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Solution

The fourth proportional to 13,201.80, 18,218.43 and 7,233.84 is: 9,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.80 : 18,218.43 = 7,233.84 : x
  2. Step 2: Convert to fraction form
    13,201.80/18,218.43 = 7,233.84/x
  3. Step 3: Cross multiply
    13,201.80x = 18,218.43 × 7,233.84
  4. Step 4: Simplify right side
    13,201.80x = 131,789,207.67
  5. Step 5: Solve for x
    x = 131,789,207.67/13,201.80
  6. Step 6: Final answer
    x = 9,982.67

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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.