Home / 11,163.20-15,399.84-6,685.76

Finding the Fourth Proportional to 11,163.20, 15,399.84 and 6,685.76

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Solution

The fourth proportional to 11,163.20, 15,399.84 and 6,685.76 is: 9,223.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.20 : 15,399.84 = 6,685.76 : x
  2. Step 2: Convert to fraction form
    11,163.20/15,399.84 = 6,685.76/x
  3. Step 3: Cross multiply
    11,163.20x = 15,399.84 × 6,685.76
  4. Step 4: Simplify right side
    11,163.20x = 102,959,634.28
  5. Step 5: Solve for x
    x = 102,959,634.28/11,163.20
  6. Step 6: Final answer
    x = 9,223.13

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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.