Home / 39,682.20-54,763.01-21,777.85

Finding the Fourth Proportional to 39,682.20, 54,763.01 and 21,777.85

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Solution

The fourth proportional to 39,682.20, 54,763.01 and 21,777.85 is: 30,054.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,682.20 : 54,763.01 = 21,777.85 : x
  2. Step 2: Convert to fraction form
    39,682.20/54,763.01 = 21,777.85/x
  3. Step 3: Cross multiply
    39,682.20x = 54,763.01 × 21,777.85
  4. Step 4: Simplify right side
    39,682.20x = 1,192,620,534.87
  5. Step 5: Solve for x
    x = 1,192,620,534.87/39,682.20
  6. Step 6: Final answer
    x = 30,054.29

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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.