Home / 12,616.60-18,903.30-8,231.80

Finding the Fourth Proportional to 12,616.60, 18,903.30 and 8,231.80

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Solution

The fourth proportional to 12,616.60, 18,903.30 and 8,231.80 is: 12,333.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,616.60 : 18,903.30 = 8,231.80 : x
  2. Step 2: Convert to fraction form
    12,616.60/18,903.30 = 8,231.80/x
  3. Step 3: Cross multiply
    12,616.60x = 18,903.30 × 8,231.80
  4. Step 4: Simplify right side
    12,616.60x = 155,608,184.94
  5. Step 5: Solve for x
    x = 155,608,184.94/12,616.60
  6. Step 6: Final answer
    x = 12,333.61

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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.