Home / 11,122.68-15,324.60-7,339.12

Finding the Fourth Proportional to 11,122.68, 15,324.60 and 7,339.12

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Solution

The fourth proportional to 11,122.68, 15,324.60 and 7,339.12 is: 10,111.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.68 : 15,324.60 = 7,339.12 : x
  2. Step 2: Convert to fraction form
    11,122.68/15,324.60 = 7,339.12/x
  3. Step 3: Cross multiply
    11,122.68x = 15,324.60 × 7,339.12
  4. Step 4: Simplify right side
    11,122.68x = 112,469,078.35
  5. Step 5: Solve for x
    x = 112,469,078.35/11,122.68
  6. Step 6: Final answer
    x = 10,111.69

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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.