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Finding the Fourth Proportional to 16,881.70, 25,286.10 and 10,976.80

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Solution

The fourth proportional to 16,881.70, 25,286.10 and 10,976.80 is: 16,441.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,881.70 : 25,286.10 = 10,976.80 : x
  2. Step 2: Convert to fraction form
    16,881.70/25,286.10 = 10,976.80/x
  3. Step 3: Cross multiply
    16,881.70x = 25,286.10 × 10,976.80
  4. Step 4: Simplify right side
    16,881.70x = 277,560,462.48
  5. Step 5: Solve for x
    x = 277,560,462.48/16,881.70
  6. Step 6: Final answer
    x = 16,441.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.