Home / 39,791.49-54,910.55-21,885.34

Finding the Fourth Proportional to 39,791.49, 54,910.55 and 21,885.34

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Solution

The fourth proportional to 39,791.49, 54,910.55 and 21,885.34 is: 30,200.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.49 : 54,910.55 = 21,885.34 : x
  2. Step 2: Convert to fraction form
    39,791.49/54,910.55 = 21,885.34/x
  3. Step 3: Cross multiply
    39,791.49x = 54,910.55 × 21,885.34
  4. Step 4: Simplify right side
    39,791.49x = 1,201,736,056.34
  5. Step 5: Solve for x
    x = 1,201,736,056.34/39,791.49
  6. Step 6: Final answer
    x = 30,200.83

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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.