Home / 39,694.55-54,780.45-21,789.41

Finding the Fourth Proportional to 39,694.55, 54,780.45 and 21,789.41

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Solution

The fourth proportional to 39,694.55, 54,780.45 and 21,789.41 is: 30,070.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.55 : 54,780.45 = 21,789.41 : x
  2. Step 2: Convert to fraction form
    39,694.55/54,780.45 = 21,789.41/x
  3. Step 3: Cross multiply
    39,694.55x = 54,780.45 × 21,789.41
  4. Step 4: Simplify right side
    39,694.55x = 1,193,633,685.03
  5. Step 5: Solve for x
    x = 1,193,633,685.03/39,694.55
  6. Step 6: Final answer
    x = 30,070.47

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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.