Home / 12,650.68-18,976.09-5,255.15

Finding the Fourth Proportional to 12,650.68, 18,976.09 and 5,255.15

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Solution

The fourth proportional to 12,650.68, 18,976.09 and 5,255.15 is: 7,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.68 : 18,976.09 = 5,255.15 : x
  2. Step 2: Convert to fraction form
    12,650.68/18,976.09 = 5,255.15/x
  3. Step 3: Cross multiply
    12,650.68x = 18,976.09 × 5,255.15
  4. Step 4: Simplify right side
    12,650.68x = 99,722,207.94
  5. Step 5: Solve for x
    x = 99,722,207.94/12,650.68
  6. Step 6: Final answer
    x = 7,882.75

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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.