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Finding the Fourth Proportional to 9,908.25, 13,679.70 and 8,844.15

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Solution

The fourth proportional to 9,908.25, 13,679.70 and 8,844.15 is: 12,210.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908.25 : 13,679.70 = 8,844.15 : x
  2. Step 2: Convert to fraction form
    9,908.25/13,679.70 = 8,844.15/x
  3. Step 3: Cross multiply
    9,908.25x = 13,679.70 × 8,844.15
  4. Step 4: Simplify right side
    9,908.25x = 120,985,318.76
  5. Step 5: Solve for x
    x = 120,985,318.76/9,908.25
  6. Step 6: Final answer
    x = 12,210.56

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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.