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Finding the Fourth Proportional to 21,923.73, 32,879.86 and 7,882.11

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Solution

The fourth proportional to 21,923.73, 32,879.86 and 7,882.11 is: 11,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.73 : 32,879.86 = 7,882.11 : x
  2. Step 2: Convert to fraction form
    21,923.73/32,879.86 = 7,882.11/x
  3. Step 3: Cross multiply
    21,923.73x = 32,879.86 × 7,882.11
  4. Step 4: Simplify right side
    21,923.73x = 259,162,653.60
  5. Step 5: Solve for x
    x = 259,162,653.60/21,923.73
  6. Step 6: Final answer
    x = 11,821.10

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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.