Home / 11,821.92-16,280.64-11,786.28

Finding the Fourth Proportional to 11,821.92, 16,280.64 and 11,786.28

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Solution

The fourth proportional to 11,821.92, 16,280.64 and 11,786.28 is: 16,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.92 : 16,280.64 = 11,786.28 : x
  2. Step 2: Convert to fraction form
    11,821.92/16,280.64 = 11,786.28/x
  3. Step 3: Cross multiply
    11,821.92x = 16,280.64 × 11,786.28
  4. Step 4: Simplify right side
    11,821.92x = 191,888,181.62
  5. Step 5: Solve for x
    x = 191,888,181.62/11,821.92
  6. Step 6: Final answer
    x = 16,231.56

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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.