Home / 28,571.82-42,885.37-13,791.14

Finding the Fourth Proportional to 28,571.82, 42,885.37 and 13,791.14

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Solution

The fourth proportional to 28,571.82, 42,885.37 and 13,791.14 is: 20,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.82 : 42,885.37 = 13,791.14 : x
  2. Step 2: Convert to fraction form
    28,571.82/42,885.37 = 13,791.14/x
  3. Step 3: Cross multiply
    28,571.82x = 42,885.37 × 13,791.14
  4. Step 4: Simplify right side
    28,571.82x = 591,438,141.62
  5. Step 5: Solve for x
    x = 591,438,141.62/28,571.82
  6. Step 6: Final answer
    x = 20,700.05

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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.