Home / 21,649.92-32,451.30-11,105.28

Finding the Fourth Proportional to 21,649.92, 32,451.30 and 11,105.28

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Solution

The fourth proportional to 21,649.92, 32,451.30 and 11,105.28 is: 16,645.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.92 : 32,451.30 = 11,105.28 : x
  2. Step 2: Convert to fraction form
    21,649.92/32,451.30 = 11,105.28/x
  3. Step 3: Cross multiply
    21,649.92x = 32,451.30 × 11,105.28
  4. Step 4: Simplify right side
    21,649.92x = 360,380,772.86
  5. Step 5: Solve for x
    x = 360,380,772.86/21,649.92
  6. Step 6: Final answer
    x = 16,645.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.