Home / 12,664.72-18,997.08-3,431.44

Finding the Fourth Proportional to 12,664.72, 18,997.08 and 3,431.44

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Solution

The fourth proportional to 12,664.72, 18,997.08 and 3,431.44 is: 5,147.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.72 : 18,997.08 = 3,431.44 : x
  2. Step 2: Convert to fraction form
    12,664.72/18,997.08 = 3,431.44/x
  3. Step 3: Cross multiply
    12,664.72x = 18,997.08 × 3,431.44
  4. Step 4: Simplify right side
    12,664.72x = 65,187,340.20
  5. Step 5: Solve for x
    x = 65,187,340.20/12,664.72
  6. Step 6: Final answer
    x = 5,147.16

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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.