Home / 21,374.31-29,496.44-11,942.79

Finding the Fourth Proportional to 21,374.31, 29,496.44 and 11,942.79

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Solution

The fourth proportional to 21,374.31, 29,496.44 and 11,942.79 is: 16,480.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.31 : 29,496.44 = 11,942.79 : x
  2. Step 2: Convert to fraction form
    21,374.31/29,496.44 = 11,942.79/x
  3. Step 3: Cross multiply
    21,374.31x = 29,496.44 × 11,942.79
  4. Step 4: Simplify right side
    21,374.31x = 352,269,728.95
  5. Step 5: Solve for x
    x = 352,269,728.95/21,374.31
  6. Step 6: Final answer
    x = 16,480.99

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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.