Home / 11,121.54-15,344.13-7,935.36

Finding the Fourth Proportional to 11,121.54, 15,344.13 and 7,935.36

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Solution

The fourth proportional to 11,121.54, 15,344.13 and 7,935.36 is: 10,948.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.54 : 15,344.13 = 7,935.36 : x
  2. Step 2: Convert to fraction form
    11,121.54/15,344.13 = 7,935.36/x
  3. Step 3: Cross multiply
    11,121.54x = 15,344.13 × 7,935.36
  4. Step 4: Simplify right side
    11,121.54x = 121,761,195.44
  5. Step 5: Solve for x
    x = 121,761,195.44/11,121.54
  6. Step 6: Final answer
    x = 10,948.23

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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.