Home / 21,906.20-32,859.30-10,220.60

Finding the Fourth Proportional to 21,906.20, 32,859.30 and 10,220.60

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Solution

The fourth proportional to 21,906.20, 32,859.30 and 10,220.60 is: 15,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.20 : 32,859.30 = 10,220.60 : x
  2. Step 2: Convert to fraction form
    21,906.20/32,859.30 = 10,220.60/x
  3. Step 3: Cross multiply
    21,906.20x = 32,859.30 × 10,220.60
  4. Step 4: Simplify right side
    21,906.20x = 335,841,761.58
  5. Step 5: Solve for x
    x = 335,841,761.58/21,906.20
  6. Step 6: Final answer
    x = 15,330.90

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1.5x scale

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.