Home / 12,781,138.37-19,181,229.66-9,378,218.34

Finding the Fourth Proportional to 12,781,138.37, 19,181,229.66 and 9,378,218.34

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Solution

The fourth proportional to 12,781,138.37, 19,181,229.66 and 9,378,218.34 is: 14,074,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781,138.37 : 19,181,229.66 = 9,378,218.34 : x
  2. Step 2: Convert to fraction form
    12,781,138.37/19,181,229.66 = 9,378,218.34/x
  3. Step 3: Cross multiply
    12,781,138.37x = 19,181,229.66 × 9,378,218.34
  4. Step 4: Simplify right side
    12,781,138.37x = 179,885,759,781,163.97
  5. Step 5: Solve for x
    x = 179,885,759,781,163.97/12,781,138.37
  6. Step 6: Final answer
    x = 14,074,314.40

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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.