Home / 11,138.26-15,369.34-6,660.38

Finding the Fourth Proportional to 11,138.26, 15,369.34 and 6,660.38

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Solution

The fourth proportional to 11,138.26, 15,369.34 and 6,660.38 is: 9,190.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.26 : 15,369.34 = 6,660.38 : x
  2. Step 2: Convert to fraction form
    11,138.26/15,369.34 = 6,660.38/x
  3. Step 3: Cross multiply
    11,138.26x = 15,369.34 × 6,660.38
  4. Step 4: Simplify right side
    11,138.26x = 102,365,534.60
  5. Step 5: Solve for x
    x = 102,365,534.60/11,138.26
  6. Step 6: Final answer
    x = 9,190.44

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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.