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Finding the Fourth Proportional to 13,326.68, 18,390.69 and 7,358.22

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Solution

The fourth proportional to 13,326.68, 18,390.69 and 7,358.22 is: 10,154.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.68 : 18,390.69 = 7,358.22 : x
  2. Step 2: Convert to fraction form
    13,326.68/18,390.69 = 7,358.22/x
  3. Step 3: Cross multiply
    13,326.68x = 18,390.69 × 7,358.22
  4. Step 4: Simplify right side
    13,326.68x = 135,322,765.96
  5. Step 5: Solve for x
    x = 135,322,765.96/13,326.68
  6. Step 6: Final answer
    x = 10,154.27

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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.