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Finding the Fourth Proportional to 21,927.01, 32,876.06 and 7,879.99

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Solution

The fourth proportional to 21,927.01, 32,876.06 and 7,879.99 is: 11,814.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,927.01 : 32,876.06 = 7,879.99 : x
  2. Step 2: Convert to fraction form
    21,927.01/32,876.06 = 7,879.99/x
  3. Step 3: Cross multiply
    21,927.01x = 32,876.06 × 7,879.99
  4. Step 4: Simplify right side
    21,927.01x = 259,062,984.64
  5. Step 5: Solve for x
    x = 259,062,984.64/21,927.01
  6. Step 6: Final answer
    x = 11,814.79

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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.