Home / 13,728.94-20,571.84-8,179.25

Finding the Fourth Proportional to 13,728.94, 20,571.84 and 8,179.25

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Solution

The fourth proportional to 13,728.94, 20,571.84 and 8,179.25 is: 12,256.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.94 : 20,571.84 = 8,179.25 : x
  2. Step 2: Convert to fraction form
    13,728.94/20,571.84 = 8,179.25/x
  3. Step 3: Cross multiply
    13,728.94x = 20,571.84 × 8,179.25
  4. Step 4: Simplify right side
    13,728.94x = 168,262,119.46
  5. Step 5: Solve for x
    x = 168,262,119.46/13,728.94
  6. Step 6: Final answer
    x = 12,256.02

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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.