Home / 12,640.83-18,959.58-3,755.97

Finding the Fourth Proportional to 12,640.83, 18,959.58 and 3,755.97

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Solution

The fourth proportional to 12,640.83, 18,959.58 and 3,755.97 is: 5,633.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.83 : 18,959.58 = 3,755.97 : x
  2. Step 2: Convert to fraction form
    12,640.83/18,959.58 = 3,755.97/x
  3. Step 3: Cross multiply
    12,640.83x = 18,959.58 × 3,755.97
  4. Step 4: Simplify right side
    12,640.83x = 71,211,613.69
  5. Step 5: Solve for x
    x = 71,211,613.69/12,640.83
  6. Step 6: Final answer
    x = 5,633.46

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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.