Home / 39,853.64-54,998.40-21,949.04

Finding the Fourth Proportional to 39,853.64, 54,998.40 and 21,949.04

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Solution

The fourth proportional to 39,853.64, 54,998.40 and 21,949.04 is: 30,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,853.64 : 54,998.40 = 21,949.04 : x
  2. Step 2: Convert to fraction form
    39,853.64/54,998.40 = 21,949.04/x
  3. Step 3: Cross multiply
    39,853.64x = 54,998.40 × 21,949.04
  4. Step 4: Simplify right side
    39,853.64x = 1,207,162,081.54
  5. Step 5: Solve for x
    x = 1,207,162,081.54/39,853.64
  6. Step 6: Final answer
    x = 30,289.88

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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.