Home / 11,163.98-15,405.23-6,687.66

Finding the Fourth Proportional to 11,163.98, 15,405.23 and 6,687.66

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Solution

The fourth proportional to 11,163.98, 15,405.23 and 6,687.66 is: 9,228.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.98 : 15,405.23 = 6,687.66 : x
  2. Step 2: Convert to fraction form
    11,163.98/15,405.23 = 6,687.66/x
  3. Step 3: Cross multiply
    11,163.98x = 15,405.23 × 6,687.66
  4. Step 4: Simplify right side
    11,163.98x = 103,024,940.46
  5. Step 5: Solve for x
    x = 103,024,940.46/11,163.98
  6. Step 6: Final answer
    x = 9,228.33

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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.