Home / 20,951,993.20-31,404,661.80-8,168,249.20

Finding the Fourth Proportional to 20,951,993.20, 31,404,661.80 and 8,168,249.20

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Solution

The fourth proportional to 20,951,993.20, 31,404,661.80 and 8,168,249.20 is: 12,243,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951,993.20 : 31,404,661.80 = 8,168,249.20 : x
  2. Step 2: Convert to fraction form
    20,951,993.20/31,404,661.80 = 8,168,249.20/x
  3. Step 3: Cross multiply
    20,951,993.20x = 31,404,661.80 × 8,168,249.20
  4. Step 4: Simplify right side
    20,951,993.20x = 256,521,103,624,120.56
  5. Step 5: Solve for x
    x = 256,521,103,624,120.56/20,951,993.20
  6. Step 6: Final answer
    x = 12,243,279.25

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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.