Home / 20,812.96-31,191.90-10,932.04

Finding the Fourth Proportional to 20,812.96, 31,191.90 and 10,932.04

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Solution

The fourth proportional to 20,812.96, 31,191.90 and 10,932.04 is: 16,383.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812.96 : 31,191.90 = 10,932.04 : x
  2. Step 2: Convert to fraction form
    20,812.96/31,191.90 = 10,932.04/x
  3. Step 3: Cross multiply
    20,812.96x = 31,191.90 × 10,932.04
  4. Step 4: Simplify right side
    20,812.96x = 340,991,098.48
  5. Step 5: Solve for x
    x = 340,991,098.48/20,812.96
  6. Step 6: Final answer
    x = 16,383.59

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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.