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Finding the Fourth Proportional to 9,968.15, 13,761.95 and 8,861.09

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Solution

The fourth proportional to 9,968.15, 13,761.95 and 8,861.09 is: 12,233.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,968.15 : 13,761.95 = 8,861.09 : x
  2. Step 2: Convert to fraction form
    9,968.15/13,761.95 = 8,861.09/x
  3. Step 3: Cross multiply
    9,968.15x = 13,761.95 × 8,861.09
  4. Step 4: Simplify right side
    9,968.15x = 121,945,764.41
  5. Step 5: Solve for x
    x = 121,945,764.41/9,968.15
  6. Step 6: Final answer
    x = 12,233.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.