Home / 21,405.62-29,540.37-11,974.22

Finding the Fourth Proportional to 21,405.62, 29,540.37 and 11,974.22

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Solution

The fourth proportional to 21,405.62, 29,540.37 and 11,974.22 is: 16,524.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.62 : 29,540.37 = 11,974.22 : x
  2. Step 2: Convert to fraction form
    21,405.62/29,540.37 = 11,974.22/x
  3. Step 3: Cross multiply
    21,405.62x = 29,540.37 × 11,974.22
  4. Step 4: Simplify right side
    21,405.62x = 353,722,889.26
  5. Step 5: Solve for x
    x = 353,722,889.26/21,405.62
  6. Step 6: Final answer
    x = 16,524.77

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1.5x scale

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.