Home / 22,131.51-30,542.21-12,571.28

Finding the Fourth Proportional to 22,131.51, 30,542.21 and 12,571.28

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Solution

The fourth proportional to 22,131.51, 30,542.21 and 12,571.28 is: 17,348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,131.51 : 30,542.21 = 12,571.28 : x
  2. Step 2: Convert to fraction form
    22,131.51/30,542.21 = 12,571.28/x
  3. Step 3: Cross multiply
    22,131.51x = 30,542.21 × 12,571.28
  4. Step 4: Simplify right side
    22,131.51x = 383,954,781.51
  5. Step 5: Solve for x
    x = 383,954,781.51/22,131.51
  6. Step 6: Final answer
    x = 17,348.78

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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.