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Finding the Fourth Proportional to 13,164.34, 18,165.56 and 7,499.41

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Solution

The fourth proportional to 13,164.34, 18,165.56 and 7,499.41 is: 10,348.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.34 : 18,165.56 = 7,499.41 : x
  2. Step 2: Convert to fraction form
    13,164.34/18,165.56 = 7,499.41/x
  3. Step 3: Cross multiply
    13,164.34x = 18,165.56 × 7,499.41
  4. Step 4: Simplify right side
    13,164.34x = 136,230,982.32
  5. Step 5: Solve for x
    x = 136,230,982.32/13,164.34
  6. Step 6: Final answer
    x = 10,348.49

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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.