Home / 21,104-29,121.28-11,672.32

Finding the Fourth Proportional to 21,104, 29,121.28 and 11,672.32

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Solution

The fourth proportional to 21,104, 29,121.28 and 11,672.32 is: 16,106.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104 : 29,121.28 = 11,672.32 : x
  2. Step 2: Convert to fraction form
    21,104/29,121.28 = 11,672.32/x
  3. Step 3: Cross multiply
    21,104x = 29,121.28 × 11,672.32
  4. Step 4: Simplify right side
    21,104x = 339,912,898.97
  5. Step 5: Solve for x
    x = 339,912,898.97/21,104
  6. Step 6: Final answer
    x = 16,106.56

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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.