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Finding the Fourth Proportional to 13,571.37, 18,728.37 and 8,793.09

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Solution

The fourth proportional to 13,571.37, 18,728.37 and 8,793.09 is: 12,134.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.37 : 18,728.37 = 8,793.09 : x
  2. Step 2: Convert to fraction form
    13,571.37/18,728.37 = 8,793.09/x
  3. Step 3: Cross multiply
    13,571.37x = 18,728.37 × 8,793.09
  4. Step 4: Simplify right side
    13,571.37x = 164,680,242.96
  5. Step 5: Solve for x
    x = 164,680,242.96/13,571.37
  6. Step 6: Final answer
    x = 12,134.39

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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.