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Finding the Fourth Proportional to 12,449.56, 17,156.72 and 8,906.64

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Solution

The fourth proportional to 12,449.56, 17,156.72 and 8,906.64 is: 12,274.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449.56 : 17,156.72 = 8,906.64 : x
  2. Step 2: Convert to fraction form
    12,449.56/17,156.72 = 8,906.64/x
  3. Step 3: Cross multiply
    12,449.56x = 17,156.72 × 8,906.64
  4. Step 4: Simplify right side
    12,449.56x = 152,808,728.62
  5. Step 5: Solve for x
    x = 152,808,728.62/12,449.56
  6. Step 6: Final answer
    x = 12,274.23

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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.