Home / 20,923,257.45-31,372,048.49-8,128,826.31

Finding the Fourth Proportional to 20,923,257.45, 31,372,048.49 and 8,128,826.31

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Solution

The fourth proportional to 20,923,257.45, 31,372,048.49 and 8,128,826.31 is: 12,188,251.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923,257.45 : 31,372,048.49 = 8,128,826.31 : x
  2. Step 2: Convert to fraction form
    20,923,257.45/31,372,048.49 = 8,128,826.31/x
  3. Step 3: Cross multiply
    20,923,257.45x = 31,372,048.49 × 8,128,826.31
  4. Step 4: Simplify right side
    20,923,257.45x = 255,017,933,123,463.62
  5. Step 5: Solve for x
    x = 255,017,933,123,463.62/20,923,257.45
  6. Step 6: Final answer
    x = 12,188,251.94

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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.