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Finding the Fourth Proportional to 13,204.98, 18,222.86 and 7,236.88

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Solution

The fourth proportional to 13,204.98, 18,222.86 and 7,236.88 is: 9,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.98 : 18,222.86 = 7,236.88 : x
  2. Step 2: Convert to fraction form
    13,204.98/18,222.86 = 7,236.88/x
  3. Step 3: Cross multiply
    13,204.98x = 18,222.86 × 7,236.88
  4. Step 4: Simplify right side
    13,204.98x = 131,876,623.61
  5. Step 5: Solve for x
    x = 131,876,623.61/13,204.98
  6. Step 6: Final answer
    x = 9,986.89

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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.