Home / 12,768.78-19,147.96-4,447.02

Finding the Fourth Proportional to 12,768.78, 19,147.96 and 4,447.02

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Solution

The fourth proportional to 12,768.78, 19,147.96 and 4,447.02 is: 6,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.78 : 19,147.96 = 4,447.02 : x
  2. Step 2: Convert to fraction form
    12,768.78/19,147.96 = 4,447.02/x
  3. Step 3: Cross multiply
    12,768.78x = 19,147.96 × 4,447.02
  4. Step 4: Simplify right side
    12,768.78x = 85,151,361.08
  5. Step 5: Solve for x
    x = 85,151,361.08/12,768.78
  6. Step 6: Final answer
    x = 6,668.72

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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.