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Finding the Fourth Proportional to 12,436.58, 17,163.72 and 9,287.30

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Solution

The fourth proportional to 12,436.58, 17,163.72 and 9,287.30 is: 12,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.58 : 17,163.72 = 9,287.30 : x
  2. Step 2: Convert to fraction form
    12,436.58/17,163.72 = 9,287.30/x
  3. Step 3: Cross multiply
    12,436.58x = 17,163.72 × 9,287.30
  4. Step 4: Simplify right side
    12,436.58x = 159,404,616.76
  5. Step 5: Solve for x
    x = 159,404,616.76/12,436.58
  6. Step 6: Final answer
    x = 12,817.40

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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.