Home / 39,705.70-54,793.97-21,801.86

Finding the Fourth Proportional to 39,705.70, 54,793.97 and 21,801.86

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Solution

The fourth proportional to 39,705.70, 54,793.97 and 21,801.86 is: 30,086.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,705.70 : 54,793.97 = 21,801.86 : x
  2. Step 2: Convert to fraction form
    39,705.70/54,793.97 = 21,801.86/x
  3. Step 3: Cross multiply
    39,705.70x = 54,793.97 × 21,801.86
  4. Step 4: Simplify right side
    39,705.70x = 1,194,610,462.78
  5. Step 5: Solve for x
    x = 1,194,610,462.78/39,705.70
  6. Step 6: Final answer
    x = 30,086.62

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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.