Home / 12,769.78-19,149.46-4,448.02

Finding the Fourth Proportional to 12,769.78, 19,149.46 and 4,448.02

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Solution

The fourth proportional to 12,769.78, 19,149.46 and 4,448.02 is: 6,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769.78 : 19,149.46 = 4,448.02 : x
  2. Step 2: Convert to fraction form
    12,769.78/19,149.46 = 4,448.02/x
  3. Step 3: Cross multiply
    12,769.78x = 19,149.46 × 4,448.02
  4. Step 4: Simplify right side
    12,769.78x = 85,177,181.07
  5. Step 5: Solve for x
    x = 85,177,181.07/12,769.78
  6. Step 6: Final answer
    x = 6,670.22

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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.