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Finding the Fourth Proportional to 12,571.75, 18,840.09 and 9,448.10

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Solution

The fourth proportional to 12,571.75, 18,840.09 and 9,448.10 is: 14,158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.75 : 18,840.09 = 9,448.10 : x
  2. Step 2: Convert to fraction form
    12,571.75/18,840.09 = 9,448.10/x
  3. Step 3: Cross multiply
    12,571.75x = 18,840.09 × 9,448.10
  4. Step 4: Simplify right side
    12,571.75x = 178,002,952.58
  5. Step 5: Solve for x
    x = 178,002,952.58/12,571.75
  6. Step 6: Final answer
    x = 14,158.97

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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.