Home / 39,694.21-54,777.79-21,789.52

Finding the Fourth Proportional to 39,694.21, 54,777.79 and 21,789.52

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Solution

The fourth proportional to 39,694.21, 54,777.79 and 21,789.52 is: 30,069.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.21 : 54,777.79 = 21,789.52 : x
  2. Step 2: Convert to fraction form
    39,694.21/54,777.79 = 21,789.52/x
  3. Step 3: Cross multiply
    39,694.21x = 54,777.79 × 21,789.52
  4. Step 4: Simplify right side
    39,694.21x = 1,193,581,750.76
  5. Step 5: Solve for x
    x = 1,193,581,750.76/39,694.21
  6. Step 6: Final answer
    x = 30,069.42

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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.