Home / 11,107.92-15,321.78-6,628.23

Finding the Fourth Proportional to 11,107.92, 15,321.78 and 6,628.23

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Solution

The fourth proportional to 11,107.92, 15,321.78 and 6,628.23 is: 9,142.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.92 : 15,321.78 = 6,628.23 : x
  2. Step 2: Convert to fraction form
    11,107.92/15,321.78 = 6,628.23/x
  3. Step 3: Cross multiply
    11,107.92x = 15,321.78 × 6,628.23
  4. Step 4: Simplify right side
    11,107.92x = 101,556,281.85
  5. Step 5: Solve for x
    x = 101,556,281.85/11,107.92
  6. Step 6: Final answer
    x = 9,142.69

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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.