Home / 20,764.10-31,151.09-6,724.13

Finding the Fourth Proportional to 20,764.10, 31,151.09 and 6,724.13

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Solution

The fourth proportional to 20,764.10, 31,151.09 and 6,724.13 is: 10,087.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.10 : 31,151.09 = 6,724.13 : x
  2. Step 2: Convert to fraction form
    20,764.10/31,151.09 = 6,724.13/x
  3. Step 3: Cross multiply
    20,764.10x = 31,151.09 × 6,724.13
  4. Step 4: Simplify right side
    20,764.10x = 209,463,839.86
  5. Step 5: Solve for x
    x = 209,463,839.86/20,764.10
  6. Step 6: Final answer
    x = 10,087.79

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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.