Home / 21,910.44-30,236.36-12,479.03

Finding the Fourth Proportional to 21,910.44, 30,236.36 and 12,479.03

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Solution

The fourth proportional to 21,910.44, 30,236.36 and 12,479.03 is: 17,221.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.44 : 30,236.36 = 12,479.03 : x
  2. Step 2: Convert to fraction form
    21,910.44/30,236.36 = 12,479.03/x
  3. Step 3: Cross multiply
    21,910.44x = 30,236.36 × 12,479.03
  4. Step 4: Simplify right side
    21,910.44x = 377,320,229.95
  5. Step 5: Solve for x
    x = 377,320,229.95/21,910.44
  6. Step 6: Final answer
    x = 17,221.02

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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.