Home / 20,278,111.74-27,984,914.82-11,579,078.67

Finding the Fourth Proportional to 20,278,111.74, 27,984,914.82 and 11,579,078.67

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Solution

The fourth proportional to 20,278,111.74, 27,984,914.82 and 11,579,078.67 is: 15,979,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278,111.74 : 27,984,914.82 = 11,579,078.67 : x
  2. Step 2: Convert to fraction form
    20,278,111.74/27,984,914.82 = 11,579,078.67/x
  3. Step 3: Cross multiply
    20,278,111.74x = 27,984,914.82 × 11,579,078.67
  4. Step 4: Simplify right side
    20,278,111.74x = 324,039,530,274,028.88
  5. Step 5: Solve for x
    x = 324,039,530,274,028.88/20,278,111.74
  6. Step 6: Final answer
    x = 15,979,768.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.