Home / 21,995.20-33,000.32-12,121.92

Finding the Fourth Proportional to 21,995.20, 33,000.32 and 12,121.92

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Solution

The fourth proportional to 21,995.20, 33,000.32 and 12,121.92 is: 18,187.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.20 : 33,000.32 = 12,121.92 : x
  2. Step 2: Convert to fraction form
    21,995.20/33,000.32 = 12,121.92/x
  3. Step 3: Cross multiply
    21,995.20x = 33,000.32 × 12,121.92
  4. Step 4: Simplify right side
    21,995.20x = 400,027,239.01
  5. Step 5: Solve for x
    x = 400,027,239.01/21,995.20
  6. Step 6: Final answer
    x = 18,187.02

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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.