Home / 21,888.20-32,832.30-20,198.60

Finding the Fourth Proportional to 21,888.20, 32,832.30 and 20,198.60

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Solution

The fourth proportional to 21,888.20, 32,832.30 and 20,198.60 is: 30,297.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.20 : 32,832.30 = 20,198.60 : x
  2. Step 2: Convert to fraction form
    21,888.20/32,832.30 = 20,198.60/x
  3. Step 3: Cross multiply
    21,888.20x = 32,832.30 × 20,198.60
  4. Step 4: Simplify right side
    21,888.20x = 663,166,494.78
  5. Step 5: Solve for x
    x = 663,166,494.78/21,888.20
  6. Step 6: Final answer
    x = 30,297.90

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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.