Home / 20,849.57-28,772.13-11,418.14

Finding the Fourth Proportional to 20,849.57, 28,772.13 and 11,418.14

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Solution

The fourth proportional to 20,849.57, 28,772.13 and 11,418.14 is: 15,756.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.57 : 28,772.13 = 11,418.14 : x
  2. Step 2: Convert to fraction form
    20,849.57/28,772.13 = 11,418.14/x
  3. Step 3: Cross multiply
    20,849.57x = 28,772.13 × 11,418.14
  4. Step 4: Simplify right side
    20,849.57x = 328,524,208.44
  5. Step 5: Solve for x
    x = 328,524,208.44/20,849.57
  6. Step 6: Final answer
    x = 15,756.88

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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.