Home / 12,781,642.75-19,172,857.79-5,589,474.55

Finding the Fourth Proportional to 12,781,642.75, 19,172,857.79 and 5,589,474.55

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Solution

The fourth proportional to 12,781,642.75, 19,172,857.79 and 5,589,474.55 is: 8,384,383.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781,642.75 : 19,172,857.79 = 5,589,474.55 : x
  2. Step 2: Convert to fraction form
    12,781,642.75/19,172,857.79 = 5,589,474.55/x
  3. Step 3: Cross multiply
    12,781,642.75x = 19,172,857.79 × 5,589,474.55
  4. Step 4: Simplify right side
    12,781,642.75x = 107,166,200,667,974.23
  5. Step 5: Solve for x
    x = 107,166,200,667,974.23/12,781,642.75
  6. Step 6: Final answer
    x = 8,384,383.98

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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.