Home / 21,979.21-32,974.26-6,396.88

Finding the Fourth Proportional to 21,979.21, 32,974.26 and 6,396.88

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Solution

The fourth proportional to 21,979.21, 32,974.26 and 6,396.88 is: 9,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.21 : 32,974.26 = 6,396.88 : x
  2. Step 2: Convert to fraction form
    21,979.21/32,974.26 = 6,396.88/x
  3. Step 3: Cross multiply
    21,979.21x = 32,974.26 × 6,396.88
  4. Step 4: Simplify right side
    21,979.21x = 210,932,384.31
  5. Step 5: Solve for x
    x = 210,932,384.31/21,979.21
  6. Step 6: Final answer
    x = 9,596.90

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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.