Home / 20,923,255.95-31,372,046.24-8,128,824.81

Finding the Fourth Proportional to 20,923,255.95, 31,372,046.24 and 8,128,824.81

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Solution

The fourth proportional to 20,923,255.95, 31,372,046.24 and 8,128,824.81 is: 12,188,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923,255.95 : 31,372,046.24 = 8,128,824.81 : x
  2. Step 2: Convert to fraction form
    20,923,255.95/31,372,046.24 = 8,128,824.81/x
  3. Step 3: Cross multiply
    20,923,255.95x = 31,372,046.24 × 8,128,824.81
  4. Step 4: Simplify right side
    20,923,255.95x = 255,017,867,775,535.06
  5. Step 5: Solve for x
    x = 255,017,867,775,535.06/20,923,255.95
  6. Step 6: Final answer
    x = 12,188,249.69

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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.