Home / 10,121.20-15,181.80-2,725.47

Finding the Fourth Proportional to 10,121.20, 15,181.80 and 2,725.47

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Solution

The fourth proportional to 10,121.20, 15,181.80 and 2,725.47 is: 4,088.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.20 : 15,181.80 = 2,725.47 : x
  2. Step 2: Convert to fraction form
    10,121.20/15,181.80 = 2,725.47/x
  3. Step 3: Cross multiply
    10,121.20x = 15,181.80 × 2,725.47
  4. Step 4: Simplify right side
    10,121.20x = 41,377,540.45
  5. Step 5: Solve for x
    x = 41,377,540.45/10,121.20
  6. Step 6: Final answer
    x = 4,088.21

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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.