Home / 12,712.56-19,072.10-3,947.60

Finding the Fourth Proportional to 12,712.56, 19,072.10 and 3,947.60

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Solution

The fourth proportional to 12,712.56, 19,072.10 and 3,947.60 is: 5,922.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.56 : 19,072.10 = 3,947.60 : x
  2. Step 2: Convert to fraction form
    12,712.56/19,072.10 = 3,947.60/x
  3. Step 3: Cross multiply
    12,712.56x = 19,072.10 × 3,947.60
  4. Step 4: Simplify right side
    12,712.56x = 75,289,021.96
  5. Step 5: Solve for x
    x = 75,289,021.96/12,712.56
  6. Step 6: Final answer
    x = 5,922.41

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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.