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Finding the Fourth Proportional to 13,755.30, 18,982.39 and 8,090.29

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Solution

The fourth proportional to 13,755.30, 18,982.39 and 8,090.29 is: 11,164.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.30 : 18,982.39 = 8,090.29 : x
  2. Step 2: Convert to fraction form
    13,755.30/18,982.39 = 8,090.29/x
  3. Step 3: Cross multiply
    13,755.30x = 18,982.39 × 8,090.29
  4. Step 4: Simplify right side
    13,755.30x = 153,573,028.03
  5. Step 5: Solve for x
    x = 153,573,028.03/13,755.30
  6. Step 6: Final answer
    x = 11,164.64

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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.