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Finding the Fourth Proportional to 12,471.12, 17,209.94 and 7,167.06

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Solution

The fourth proportional to 12,471.12, 17,209.94 and 7,167.06 is: 9,890.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.12 : 17,209.94 = 7,167.06 : x
  2. Step 2: Convert to fraction form
    12,471.12/17,209.94 = 7,167.06/x
  3. Step 3: Cross multiply
    12,471.12x = 17,209.94 × 7,167.06
  4. Step 4: Simplify right side
    12,471.12x = 123,344,672.58
  5. Step 5: Solve for x
    x = 123,344,672.58/12,471.12
  6. Step 6: Final answer
    x = 9,890.42

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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.