Home / 21,862.20-32,793.30-20,172.60

Finding the Fourth Proportional to 21,862.20, 32,793.30 and 20,172.60

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Solution

The fourth proportional to 21,862.20, 32,793.30 and 20,172.60 is: 30,258.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.20 : 32,793.30 = 20,172.60 : x
  2. Step 2: Convert to fraction form
    21,862.20/32,793.30 = 20,172.60/x
  3. Step 3: Cross multiply
    21,862.20x = 32,793.30 × 20,172.60
  4. Step 4: Simplify right side
    21,862.20x = 661,526,123.58
  5. Step 5: Solve for x
    x = 661,526,123.58/21,862.20
  6. Step 6: Final answer
    x = 30,258.90

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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.