Home / 42,520.48-63,791.21-12,936.75

Finding the Fourth Proportional to 42,520.48, 63,791.21 and 12,936.75

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Solution

The fourth proportional to 42,520.48, 63,791.21 and 12,936.75 is: 19,408.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,520.48 : 63,791.21 = 12,936.75 : x
  2. Step 2: Convert to fraction form
    42,520.48/63,791.21 = 12,936.75/x
  3. Step 3: Cross multiply
    42,520.48x = 63,791.21 × 12,936.75
  4. Step 4: Simplify right side
    42,520.48x = 825,250,729.09
  5. Step 5: Solve for x
    x = 825,250,729.09/42,520.48
  6. Step 6: Final answer
    x = 19,408.31

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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.