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Finding the Fourth Proportional to 13,316.25, 18,375.36 and 7,347.11

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Solution

The fourth proportional to 13,316.25, 18,375.36 and 7,347.11 is: 10,138.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.25 : 18,375.36 = 7,347.11 : x
  2. Step 2: Convert to fraction form
    13,316.25/18,375.36 = 7,347.11/x
  3. Step 3: Cross multiply
    13,316.25x = 18,375.36 × 7,347.11
  4. Step 4: Simplify right side
    13,316.25x = 135,005,671.78
  5. Step 5: Solve for x
    x = 135,005,671.78/13,316.25
  6. Step 6: Final answer
    x = 10,138.42

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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.