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Finding the Fourth Proportional to 12,326.12, 17,010.48 and 7,021.76

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Solution

The fourth proportional to 12,326.12, 17,010.48 and 7,021.76 is: 9,690.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,326.12 : 17,010.48 = 7,021.76 : x
  2. Step 2: Convert to fraction form
    12,326.12/17,010.48 = 7,021.76/x
  3. Step 3: Cross multiply
    12,326.12x = 17,010.48 × 7,021.76
  4. Step 4: Simplify right side
    12,326.12x = 119,443,508.04
  5. Step 5: Solve for x
    x = 119,443,508.04/12,326.12
  6. Step 6: Final answer
    x = 9,690.28

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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.