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Finding the Fourth Proportional to 11,524.74, 15,906.42 and 6,745.20

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Solution

The fourth proportional to 11,524.74, 15,906.42 and 6,745.20 is: 9,309.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,524.74 : 15,906.42 = 6,745.20 : x
  2. Step 2: Convert to fraction form
    11,524.74/15,906.42 = 6,745.20/x
  3. Step 3: Cross multiply
    11,524.74x = 15,906.42 × 6,745.20
  4. Step 4: Simplify right side
    11,524.74x = 107,291,984.18
  5. Step 5: Solve for x
    x = 107,291,984.18/11,524.74
  6. Step 6: Final answer
    x = 9,309.71

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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.