Home / 21,353.53-29,467.25-11,921.89

Finding the Fourth Proportional to 21,353.53, 29,467.25 and 11,921.89

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Solution

The fourth proportional to 21,353.53, 29,467.25 and 11,921.89 is: 16,451.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.53 : 29,467.25 = 11,921.89 : x
  2. Step 2: Convert to fraction form
    21,353.53/29,467.25 = 11,921.89/x
  3. Step 3: Cross multiply
    21,353.53x = 29,467.25 × 11,921.89
  4. Step 4: Simplify right side
    21,353.53x = 351,305,165.77
  5. Step 5: Solve for x
    x = 351,305,165.77/21,353.53
  6. Step 6: Final answer
    x = 16,451.86

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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.