Home / 39,698.67-54,781.71-21,793.57

Finding the Fourth Proportional to 39,698.67, 54,781.71 and 21,793.57

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Solution

The fourth proportional to 39,698.67, 54,781.71 and 21,793.57 is: 30,073.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,698.67 : 54,781.71 = 21,793.57 : x
  2. Step 2: Convert to fraction form
    39,698.67/54,781.71 = 21,793.57/x
  3. Step 3: Cross multiply
    39,698.67x = 54,781.71 × 21,793.57
  4. Step 4: Simplify right side
    39,698.67x = 1,193,888,812.92
  5. Step 5: Solve for x
    x = 1,193,888,812.92/39,698.67
  6. Step 6: Final answer
    x = 30,073.77

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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.