Home / 12,356,786.82-18,538,267.47-8,720,616.38

Finding the Fourth Proportional to 12,356,786.82, 18,538,267.47 and 8,720,616.38

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Solution

The fourth proportional to 12,356,786.82, 18,538,267.47 and 8,720,616.38 is: 13,083,103.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356,786.82 : 18,538,267.47 = 8,720,616.38 : x
  2. Step 2: Convert to fraction form
    12,356,786.82/18,538,267.47 = 8,720,616.38/x
  3. Step 3: Cross multiply
    12,356,786.82x = 18,538,267.47 × 8,720,616.38
  4. Step 4: Simplify right side
    12,356,786.82x = 161,665,119,008,171.84
  5. Step 5: Solve for x
    x = 161,665,119,008,171.84/12,356,786.82
  6. Step 6: Final answer
    x = 13,083,103.34

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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.