Home / 12,409.67-17,115.91-8,632.85

Finding the Fourth Proportional to 12,409.67, 17,115.91 and 8,632.85

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Solution

The fourth proportional to 12,409.67, 17,115.91 and 8,632.85 is: 11,906.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.67 : 17,115.91 = 8,632.85 : x
  2. Step 2: Convert to fraction form
    12,409.67/17,115.91 = 8,632.85/x
  3. Step 3: Cross multiply
    12,409.67x = 17,115.91 × 8,632.85
  4. Step 4: Simplify right side
    12,409.67x = 147,758,976.48
  5. Step 5: Solve for x
    x = 147,758,976.48/12,409.67
  6. Step 6: Final answer
    x = 11,906.76

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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.