Home / 39,694.08-54,777.63-21,789.39

Finding the Fourth Proportional to 39,694.08, 54,777.63 and 21,789.39

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Solution

The fourth proportional to 39,694.08, 54,777.63 and 21,789.39 is: 30,069.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.08 : 54,777.63 = 21,789.39 : x
  2. Step 2: Convert to fraction form
    39,694.08/54,777.63 = 21,789.39/x
  3. Step 3: Cross multiply
    39,694.08x = 54,777.63 × 21,789.39
  4. Step 4: Simplify right side
    39,694.08x = 1,193,571,143.35
  5. Step 5: Solve for x
    x = 1,193,571,143.35/39,694.08
  6. Step 6: Final answer
    x = 30,069.25

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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.