Home / 12,485.75-18,724.50-4,163.47

Finding the Fourth Proportional to 12,485.75, 18,724.50 and 4,163.47

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Solution

The fourth proportional to 12,485.75, 18,724.50 and 4,163.47 is: 6,243.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.75 : 18,724.50 = 4,163.47 : x
  2. Step 2: Convert to fraction form
    12,485.75/18,724.50 = 4,163.47/x
  3. Step 3: Cross multiply
    12,485.75x = 18,724.50 × 4,163.47
  4. Step 4: Simplify right side
    12,485.75x = 77,958,847.20
  5. Step 5: Solve for x
    x = 77,958,847.20/12,485.75
  6. Step 6: Final answer
    x = 6,243.83

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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.