Home / 21,331.28-32,005.98-8,181.92

Finding the Fourth Proportional to 21,331.28, 32,005.98 and 8,181.92

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Solution

The fourth proportional to 21,331.28, 32,005.98 and 8,181.92 is: 12,276.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.28 : 32,005.98 = 8,181.92 : x
  2. Step 2: Convert to fraction form
    21,331.28/32,005.98 = 8,181.92/x
  3. Step 3: Cross multiply
    21,331.28x = 32,005.98 × 8,181.92
  4. Step 4: Simplify right side
    21,331.28x = 261,870,367.88
  5. Step 5: Solve for x
    x = 261,870,367.88/21,331.28
  6. Step 6: Final answer
    x = 12,276.36

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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.