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Finding the Fourth Proportional to 13,245.81, 18,279.14 and 7,196

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Solution

The fourth proportional to 13,245.81, 18,279.14 and 7,196 is: 9,930.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.81 : 18,279.14 = 7,196 : x
  2. Step 2: Convert to fraction form
    13,245.81/18,279.14 = 7,196/x
  3. Step 3: Cross multiply
    13,245.81x = 18,279.14 × 7,196
  4. Step 4: Simplify right side
    13,245.81x = 131,536,691.44
  5. Step 5: Solve for x
    x = 131,536,691.44/13,245.81
  6. Step 6: Final answer
    x = 9,930.44

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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.