Home / 21,353.25-29,467.62-11,921.88

Finding the Fourth Proportional to 21,353.25, 29,467.62 and 11,921.88

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Solution

The fourth proportional to 21,353.25, 29,467.62 and 11,921.88 is: 16,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.25 : 29,467.62 = 11,921.88 : x
  2. Step 2: Convert to fraction form
    21,353.25/29,467.62 = 11,921.88/x
  3. Step 3: Cross multiply
    21,353.25x = 29,467.62 × 11,921.88
  4. Step 4: Simplify right side
    21,353.25x = 351,309,429.53
  5. Step 5: Solve for x
    x = 351,309,429.53/21,353.25
  6. Step 6: Final answer
    x = 16,452.27

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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.