Home / 20,849.22-28,772.06-11,418.66

Finding the Fourth Proportional to 20,849.22, 28,772.06 and 11,418.66

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Solution

The fourth proportional to 20,849.22, 28,772.06 and 11,418.66 is: 15,757.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.22 : 28,772.06 = 11,418.66 : x
  2. Step 2: Convert to fraction form
    20,849.22/28,772.06 = 11,418.66/x
  3. Step 3: Cross multiply
    20,849.22x = 28,772.06 × 11,418.66
  4. Step 4: Simplify right side
    20,849.22x = 328,538,313.55
  5. Step 5: Solve for x
    x = 328,538,313.55/20,849.22
  6. Step 6: Final answer
    x = 15,757.82

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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.