Home / 10,121.28-15,179.94-2,725.80

Finding the Fourth Proportional to 10,121.28, 15,179.94 and 2,725.80

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Solution

The fourth proportional to 10,121.28, 15,179.94 and 2,725.80 is: 4,088.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.28 : 15,179.94 = 2,725.80 : x
  2. Step 2: Convert to fraction form
    10,121.28/15,179.94 = 2,725.80/x
  3. Step 3: Cross multiply
    10,121.28x = 15,179.94 × 2,725.80
  4. Step 4: Simplify right side
    10,121.28x = 41,377,480.45
  5. Step 5: Solve for x
    x = 41,377,480.45/10,121.28
  6. Step 6: Final answer
    x = 4,088.17

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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.