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Finding the Fourth Proportional to 12,571.92, 18,855.12 and 9,094.56

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Solution

The fourth proportional to 12,571.92, 18,855.12 and 9,094.56 is: 13,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.92 : 18,855.12 = 9,094.56 : x
  2. Step 2: Convert to fraction form
    12,571.92/18,855.12 = 9,094.56/x
  3. Step 3: Cross multiply
    12,571.92x = 18,855.12 × 9,094.56
  4. Step 4: Simplify right side
    12,571.92x = 171,479,020.15
  5. Step 5: Solve for x
    x = 171,479,020.15/12,571.92
  6. Step 6: Final answer
    x = 13,639.84

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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.