Home / 21,672.36-29,906.82-12,242.28

Finding the Fourth Proportional to 21,672.36, 29,906.82 and 12,242.28

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Solution

The fourth proportional to 21,672.36, 29,906.82 and 12,242.28 is: 16,893.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.36 : 29,906.82 = 12,242.28 : x
  2. Step 2: Convert to fraction form
    21,672.36/29,906.82 = 12,242.28/x
  3. Step 3: Cross multiply
    21,672.36x = 29,906.82 × 12,242.28
  4. Step 4: Simplify right side
    21,672.36x = 366,127,664.35
  5. Step 5: Solve for x
    x = 366,127,664.35/21,672.36
  6. Step 6: Final answer
    x = 16,893.76

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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.