Home / 12,636.24-18,961.20-5,245.80

Finding the Fourth Proportional to 12,636.24, 18,961.20 and 5,245.80

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Solution

The fourth proportional to 12,636.24, 18,961.20 and 5,245.80 is: 7,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.24 : 18,961.20 = 5,245.80 : x
  2. Step 2: Convert to fraction form
    12,636.24/18,961.20 = 5,245.80/x
  3. Step 3: Cross multiply
    12,636.24x = 18,961.20 × 5,245.80
  4. Step 4: Simplify right side
    12,636.24x = 99,466,662.96
  5. Step 5: Solve for x
    x = 99,466,662.96/12,636.24
  6. Step 6: Final answer
    x = 7,871.54

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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.