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Finding the Fourth Proportional to 13,601.75, 18,770.76 and 7,633.88

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Solution

The fourth proportional to 13,601.75, 18,770.76 and 7,633.88 is: 10,534.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.75 : 18,770.76 = 7,633.88 : x
  2. Step 2: Convert to fraction form
    13,601.75/18,770.76 = 7,633.88/x
  3. Step 3: Cross multiply
    13,601.75x = 18,770.76 × 7,633.88
  4. Step 4: Simplify right side
    13,601.75x = 143,293,635.50
  5. Step 5: Solve for x
    x = 143,293,635.50/13,601.75
  6. Step 6: Final answer
    x = 10,534.94

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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.