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Finding the Fourth Proportional to 11,485.54, 17,239.92 and 7,736.86

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Solution

The fourth proportional to 11,485.54, 17,239.92 and 7,736.86 is: 11,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.54 : 17,239.92 = 7,736.86 : x
  2. Step 2: Convert to fraction form
    11,485.54/17,239.92 = 7,736.86/x
  3. Step 3: Cross multiply
    11,485.54x = 17,239.92 × 7,736.86
  4. Step 4: Simplify right side
    11,485.54x = 133,382,847.45
  5. Step 5: Solve for x
    x = 133,382,847.45/11,485.54
  6. Step 6: Final answer
    x = 11,613.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.