Home / 20,571.87-28,388.97-11,619.35

Finding the Fourth Proportional to 20,571.87, 28,388.97 and 11,619.35

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Solution

The fourth proportional to 20,571.87, 28,388.97 and 11,619.35 is: 16,034.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.87 : 28,388.97 = 11,619.35 : x
  2. Step 2: Convert to fraction form
    20,571.87/28,388.97 = 11,619.35/x
  3. Step 3: Cross multiply
    20,571.87x = 28,388.97 × 11,619.35
  4. Step 4: Simplify right side
    20,571.87x = 329,861,236.62
  5. Step 5: Solve for x
    x = 329,861,236.62/20,571.87
  6. Step 6: Final answer
    x = 16,034.58

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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.