Home / 11,022.75-15,212.61-6,831

Finding the Fourth Proportional to 11,022.75, 15,212.61 and 6,831

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Solution

The fourth proportional to 11,022.75, 15,212.61 and 6,831 is: 9,427.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,022.75 : 15,212.61 = 6,831 : x
  2. Step 2: Convert to fraction form
    11,022.75/15,212.61 = 6,831/x
  3. Step 3: Cross multiply
    11,022.75x = 15,212.61 × 6,831
  4. Step 4: Simplify right side
    11,022.75x = 103,917,338.91
  5. Step 5: Solve for x
    x = 103,917,338.91/11,022.75
  6. Step 6: Final answer
    x = 9,427.53

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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.