Home / 39,187.92-54,078.45-21,282.78

Finding the Fourth Proportional to 39,187.92, 54,078.45 and 21,282.78

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Solution

The fourth proportional to 39,187.92, 54,078.45 and 21,282.78 is: 29,369.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,187.92 : 54,078.45 = 21,282.78 : x
  2. Step 2: Convert to fraction form
    39,187.92/54,078.45 = 21,282.78/x
  3. Step 3: Cross multiply
    39,187.92x = 54,078.45 × 21,282.78
  4. Step 4: Simplify right side
    39,187.92x = 1,150,939,754.09
  5. Step 5: Solve for x
    x = 1,150,939,754.09/39,187.92
  6. Step 6: Final answer
    x = 29,369.76

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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.