Home / 21,985.52-32,974.20-6,399.44

Finding the Fourth Proportional to 21,985.52, 32,974.20 and 6,399.44

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Solution

The fourth proportional to 21,985.52, 32,974.20 and 6,399.44 is: 9,597.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.52 : 32,974.20 = 6,399.44 : x
  2. Step 2: Convert to fraction form
    21,985.52/32,974.20 = 6,399.44/x
  3. Step 3: Cross multiply
    21,985.52x = 32,974.20 × 6,399.44
  4. Step 4: Simplify right side
    21,985.52x = 211,016,414.45
  5. Step 5: Solve for x
    x = 211,016,414.45/21,985.52
  6. Step 6: Final answer
    x = 9,597.97

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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.