Home / 12,625.90-18,938.77-3,860.78

Finding the Fourth Proportional to 12,625.90, 18,938.77 and 3,860.78

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Solution

The fourth proportional to 12,625.90, 18,938.77 and 3,860.78 is: 5,791.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,625.90 : 18,938.77 = 3,860.78 : x
  2. Step 2: Convert to fraction form
    12,625.90/18,938.77 = 3,860.78/x
  3. Step 3: Cross multiply
    12,625.90x = 18,938.77 × 3,860.78
  4. Step 4: Simplify right side
    12,625.90x = 73,118,424.44
  5. Step 5: Solve for x
    x = 73,118,424.44/12,625.90
  6. Step 6: Final answer
    x = 5,791.15

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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.