Home / 12,736.80-19,105.20-4,945.68

Finding the Fourth Proportional to 12,736.80, 19,105.20 and 4,945.68

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Solution

The fourth proportional to 12,736.80, 19,105.20 and 4,945.68 is: 7,418.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,736.80 : 19,105.20 = 4,945.68 : x
  2. Step 2: Convert to fraction form
    12,736.80/19,105.20 = 4,945.68/x
  3. Step 3: Cross multiply
    12,736.80x = 19,105.20 × 4,945.68
  4. Step 4: Simplify right side
    12,736.80x = 94,488,205.54
  5. Step 5: Solve for x
    x = 94,488,205.54/12,736.80
  6. Step 6: Final answer
    x = 7,418.52

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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.