Home / 22,550.49-31,122.90-13,122.09

Finding the Fourth Proportional to 22,550.49, 31,122.90 and 13,122.09

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Solution

The fourth proportional to 22,550.49, 31,122.90 and 13,122.09 is: 18,110.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,550.49 : 31,122.90 = 13,122.09 : x
  2. Step 2: Convert to fraction form
    22,550.49/31,122.90 = 13,122.09/x
  3. Step 3: Cross multiply
    22,550.49x = 31,122.90 × 13,122.09
  4. Step 4: Simplify right side
    22,550.49x = 408,397,494.86
  5. Step 5: Solve for x
    x = 408,397,494.86/22,550.49
  6. Step 6: Final answer
    x = 18,110.36

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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.