Home / 12,745.37-19,118.12-3,979.55

Finding the Fourth Proportional to 12,745.37, 19,118.12 and 3,979.55

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Solution

The fourth proportional to 12,745.37, 19,118.12 and 3,979.55 is: 5,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.37 : 19,118.12 = 3,979.55 : x
  2. Step 2: Convert to fraction form
    12,745.37/19,118.12 = 3,979.55/x
  3. Step 3: Cross multiply
    12,745.37x = 19,118.12 × 3,979.55
  4. Step 4: Simplify right side
    12,745.37x = 76,081,398.96
  5. Step 5: Solve for x
    x = 76,081,398.96/12,745.37
  6. Step 6: Final answer
    x = 5,969.34

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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.