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Finding the Fourth Proportional to 33,340.80, 46,020.80 and 19,921.92

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Solution

The fourth proportional to 33,340.80, 46,020.80 and 19,921.92 is: 27,498.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,340.80 : 46,020.80 = 19,921.92 : x
  2. Step 2: Convert to fraction form
    33,340.80/46,020.80 = 19,921.92/x
  3. Step 3: Cross multiply
    33,340.80x = 46,020.80 × 19,921.92
  4. Step 4: Simplify right side
    33,340.80x = 916,822,695.94
  5. Step 5: Solve for x
    x = 916,822,695.94/33,340.80
  6. Step 6: Final answer
    x = 27,498.52

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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.