Home / 39,793.16-54,914.82-21,887.71

Finding the Fourth Proportional to 39,793.16, 54,914.82 and 21,887.71

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Solution

The fourth proportional to 39,793.16, 54,914.82 and 21,887.71 is: 30,205.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,793.16 : 54,914.82 = 21,887.71 : x
  2. Step 2: Convert to fraction form
    39,793.16/54,914.82 = 21,887.71/x
  3. Step 3: Cross multiply
    39,793.16x = 54,914.82 × 21,887.71
  4. Step 4: Simplify right side
    39,793.16x = 1,201,959,654.86
  5. Step 5: Solve for x
    x = 1,201,959,654.86/39,793.16
  6. Step 6: Final answer
    x = 30,205.18

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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.