Home / 39,912.09-55,078.90-22,006.78

Finding the Fourth Proportional to 39,912.09, 55,078.90 and 22,006.78

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Solution

The fourth proportional to 39,912.09, 55,078.90 and 22,006.78 is: 30,369.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,912.09 : 55,078.90 = 22,006.78 : x
  2. Step 2: Convert to fraction form
    39,912.09/55,078.90 = 22,006.78/x
  3. Step 3: Cross multiply
    39,912.09x = 55,078.90 × 22,006.78
  4. Step 4: Simplify right side
    39,912.09x = 1,212,109,234.94
  5. Step 5: Solve for x
    x = 1,212,109,234.94/39,912.09
  6. Step 6: Final answer
    x = 30,369.48

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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.