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Finding the Fourth Proportional to 10,168.80, 15,183.99 and 8,972.88

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Solution

The fourth proportional to 10,168.80, 15,183.99 and 8,972.88 is: 13,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,168.80 : 15,183.99 = 8,972.88 : x
  2. Step 2: Convert to fraction form
    10,168.80/15,183.99 = 8,972.88/x
  3. Step 3: Cross multiply
    10,168.80x = 15,183.99 × 8,972.88
  4. Step 4: Simplify right side
    10,168.80x = 136,244,120.19
  5. Step 5: Solve for x
    x = 136,244,120.19/10,168.80
  6. Step 6: Final answer
    x = 13,398.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.