Home / 10,721.43-16,080.26-4,142.21

Finding the Fourth Proportional to 10,721.43, 16,080.26 and 4,142.21

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Solution

The fourth proportional to 10,721.43, 16,080.26 and 4,142.21 is: 6,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.43 : 16,080.26 = 4,142.21 : x
  2. Step 2: Convert to fraction form
    10,721.43/16,080.26 = 4,142.21/x
  3. Step 3: Cross multiply
    10,721.43x = 16,080.26 × 4,142.21
  4. Step 4: Simplify right side
    10,721.43x = 66,607,712.66
  5. Step 5: Solve for x
    x = 66,607,712.66/10,721.43
  6. Step 6: Final answer
    x = 6,212.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.