Home / 33,813.20-46,663.92-20,388.78

Finding the Fourth Proportional to 33,813.20, 46,663.92 and 20,388.78

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Solution

The fourth proportional to 33,813.20, 46,663.92 and 20,388.78 is: 28,137.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,813.20 : 46,663.92 = 20,388.78 : x
  2. Step 2: Convert to fraction form
    33,813.20/46,663.92 = 20,388.78/x
  3. Step 3: Cross multiply
    33,813.20x = 46,663.92 × 20,388.78
  4. Step 4: Simplify right side
    33,813.20x = 951,420,398.82
  5. Step 5: Solve for x
    x = 951,420,398.82/33,813.20
  6. Step 6: Final answer
    x = 28,137.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.