Home / 20,744.10-31,148.55-11,996.10

Finding the Fourth Proportional to 20,744.10, 31,148.55 and 11,996.10

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Solution

The fourth proportional to 20,744.10, 31,148.55 and 11,996.10 is: 18,012.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.10 : 31,148.55 = 11,996.10 : x
  2. Step 2: Convert to fraction form
    20,744.10/31,148.55 = 11,996.10/x
  3. Step 3: Cross multiply
    20,744.10x = 31,148.55 × 11,996.10
  4. Step 4: Simplify right side
    20,744.10x = 373,661,120.66
  5. Step 5: Solve for x
    x = 373,661,120.66/20,744.10
  6. Step 6: Final answer
    x = 18,012.89

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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.