Home / 11,321.30-15,628.62-6,786.13

Finding the Fourth Proportional to 11,321.30, 15,628.62 and 6,786.13

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Solution

The fourth proportional to 11,321.30, 15,628.62 and 6,786.13 is: 9,367.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.30 : 15,628.62 = 6,786.13 : x
  2. Step 2: Convert to fraction form
    11,321.30/15,628.62 = 6,786.13/x
  3. Step 3: Cross multiply
    11,321.30x = 15,628.62 × 6,786.13
  4. Step 4: Simplify right side
    11,321.30x = 106,057,847.04
  5. Step 5: Solve for x
    x = 106,057,847.04/11,321.30
  6. Step 6: Final answer
    x = 9,367.99

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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.