Home / 22,383.09-30,889.42-12,311.96

Finding the Fourth Proportional to 22,383.09, 30,889.42 and 12,311.96

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Solution

The fourth proportional to 22,383.09, 30,889.42 and 12,311.96 is: 16,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,383.09 : 30,889.42 = 12,311.96 : x
  2. Step 2: Convert to fraction form
    22,383.09/30,889.42 = 12,311.96/x
  3. Step 3: Cross multiply
    22,383.09x = 30,889.42 × 12,311.96
  4. Step 4: Simplify right side
    22,383.09x = 380,309,118.24
  5. Step 5: Solve for x
    x = 380,309,118.24/22,383.09
  6. Step 6: Final answer
    x = 16,990.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.