Home / 21,902.20-32,835.30-9,431.80

Finding the Fourth Proportional to 21,902.20, 32,835.30 and 9,431.80

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Solution

The fourth proportional to 21,902.20, 32,835.30 and 9,431.80 is: 14,139.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.20 : 32,835.30 = 9,431.80 : x
  2. Step 2: Convert to fraction form
    21,902.20/32,835.30 = 9,431.80/x
  3. Step 3: Cross multiply
    21,902.20x = 32,835.30 × 9,431.80
  4. Step 4: Simplify right side
    21,902.20x = 309,695,982.54
  5. Step 5: Solve for x
    x = 309,695,982.54/21,902.20
  6. Step 6: Final answer
    x = 14,139.95

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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.