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Finding the Fourth Proportional to 11,927.88, 17,879.52 and 8,632.80

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Solution

The fourth proportional to 11,927.88, 17,879.52 and 8,632.80 is: 12,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,927.88 : 17,879.52 = 8,632.80 : x
  2. Step 2: Convert to fraction form
    11,927.88/17,879.52 = 8,632.80/x
  3. Step 3: Cross multiply
    11,927.88x = 17,879.52 × 8,632.80
  4. Step 4: Simplify right side
    11,927.88x = 154,350,320.26
  5. Step 5: Solve for x
    x = 154,350,320.26/11,927.88
  6. Step 6: Final answer
    x = 12,940.30

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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.