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Finding the Fourth Proportional to 13,179.46, 18,187.58 and 7,211.02

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Solution

The fourth proportional to 13,179.46, 18,187.58 and 7,211.02 is: 9,951.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.46 : 18,187.58 = 7,211.02 : x
  2. Step 2: Convert to fraction form
    13,179.46/18,187.58 = 7,211.02/x
  3. Step 3: Cross multiply
    13,179.46x = 18,187.58 × 7,211.02
  4. Step 4: Simplify right side
    13,179.46x = 131,151,003.13
  5. Step 5: Solve for x
    x = 131,151,003.13/13,179.46
  6. Step 6: Final answer
    x = 9,951.17

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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.