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Finding the Fourth Proportional to 12,770.80, 19,150.80 and 4,003.36

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Solution

The fourth proportional to 12,770.80, 19,150.80 and 4,003.36 is: 6,003.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,770.80 : 19,150.80 = 4,003.36 : x
  2. Step 2: Convert to fraction form
    12,770.80/19,150.80 = 4,003.36/x
  3. Step 3: Cross multiply
    12,770.80x = 19,150.80 × 4,003.36
  4. Step 4: Simplify right side
    12,770.80x = 76,667,546.69
  5. Step 5: Solve for x
    x = 76,667,546.69/12,770.80
  6. Step 6: Final answer
    x = 6,003.35

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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.