Home / 21,131.66-29,160.39-11,571.66

Finding the Fourth Proportional to 21,131.66, 29,160.39 and 11,571.66

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Solution

The fourth proportional to 21,131.66, 29,160.39 and 11,571.66 is: 15,968.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.66 : 29,160.39 = 11,571.66 : x
  2. Step 2: Convert to fraction form
    21,131.66/29,160.39 = 11,571.66/x
  3. Step 3: Cross multiply
    21,131.66x = 29,160.39 × 11,571.66
  4. Step 4: Simplify right side
    21,131.66x = 337,434,161.94
  5. Step 5: Solve for x
    x = 337,434,161.94/21,131.66
  6. Step 6: Final answer
    x = 15,968.18

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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.