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Finding the Fourth Proportional to 18,571.78, 25,629.06 and 10,188.28

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Solution

The fourth proportional to 18,571.78, 25,629.06 and 10,188.28 is: 14,059.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.78 : 25,629.06 = 10,188.28 : x
  2. Step 2: Convert to fraction form
    18,571.78/25,629.06 = 10,188.28/x
  3. Step 3: Cross multiply
    18,571.78x = 25,629.06 × 10,188.28
  4. Step 4: Simplify right side
    18,571.78x = 261,116,052.35
  5. Step 5: Solve for x
    x = 261,116,052.35/18,571.78
  6. Step 6: Final answer
    x = 14,059.83

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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.