Home / 18,202.92-25,121.06-11,128.20

Finding the Fourth Proportional to 18,202.92, 25,121.06 and 11,128.20

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Solution

The fourth proportional to 18,202.92, 25,121.06 and 11,128.20 is: 15,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,202.92 : 25,121.06 = 11,128.20 : x
  2. Step 2: Convert to fraction form
    18,202.92/25,121.06 = 11,128.20/x
  3. Step 3: Cross multiply
    18,202.92x = 25,121.06 × 11,128.20
  4. Step 4: Simplify right side
    18,202.92x = 279,552,179.89
  5. Step 5: Solve for x
    x = 279,552,179.89/18,202.92
  6. Step 6: Final answer
    x = 15,357.55

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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.