Home / 12,385.44-18,571.68-5,456.16

Finding the Fourth Proportional to 12,385.44, 18,571.68 and 5,456.16

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Solution

The fourth proportional to 12,385.44, 18,571.68 and 5,456.16 is: 8,181.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.44 : 18,571.68 = 5,456.16 : x
  2. Step 2: Convert to fraction form
    12,385.44/18,571.68 = 5,456.16/x
  3. Step 3: Cross multiply
    12,385.44x = 18,571.68 × 5,456.16
  4. Step 4: Simplify right side
    12,385.44x = 101,330,057.55
  5. Step 5: Solve for x
    x = 101,330,057.55/12,385.44
  6. Step 6: Final answer
    x = 8,181.39

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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.