Home / 13,121,998.80-19,667,251.80-6,728,960.40

Finding the Fourth Proportional to 13,121,998.80, 19,667,251.80 and 6,728,960.40

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Solution

The fourth proportional to 13,121,998.80, 19,667,251.80 and 6,728,960.40 is: 10,085,365.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,998.80 : 19,667,251.80 = 6,728,960.40 : x
  2. Step 2: Convert to fraction form
    13,121,998.80/19,667,251.80 = 6,728,960.40/x
  3. Step 3: Cross multiply
    13,121,998.80x = 19,667,251.80 × 6,728,960.40
  4. Step 4: Simplify right side
    13,121,998.80x = 132,340,158,539,028.73
  5. Step 5: Solve for x
    x = 132,340,158,539,028.73/13,121,998.80
  6. Step 6: Final answer
    x = 10,085,365.85

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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.