Home / 12,745.66-19,119.30-3,385.53

Finding the Fourth Proportional to 12,745.66, 19,119.30 and 3,385.53

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Solution

The fourth proportional to 12,745.66, 19,119.30 and 3,385.53 is: 5,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.66 : 19,119.30 = 3,385.53 : x
  2. Step 2: Convert to fraction form
    12,745.66/19,119.30 = 3,385.53/x
  3. Step 3: Cross multiply
    12,745.66x = 19,119.30 × 3,385.53
  4. Step 4: Simplify right side
    12,745.66x = 64,728,963.73
  5. Step 5: Solve for x
    x = 64,728,963.73/12,745.66
  6. Step 6: Final answer
    x = 5,078.51

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1.5x scale

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.