Home / 20,571.13-30,850.38-8,724.69

Finding the Fourth Proportional to 20,571.13, 30,850.38 and 8,724.69

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Solution

The fourth proportional to 20,571.13, 30,850.38 and 8,724.69 is: 13,084.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.13 : 30,850.38 = 8,724.69 : x
  2. Step 2: Convert to fraction form
    20,571.13/30,850.38 = 8,724.69/x
  3. Step 3: Cross multiply
    20,571.13x = 30,850.38 × 8,724.69
  4. Step 4: Simplify right side
    20,571.13x = 269,160,001.88
  5. Step 5: Solve for x
    x = 269,160,001.88/20,571.13
  6. Step 6: Final answer
    x = 13,084.36

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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.