Home / 20,923,255.20-31,372,045.11-8,128,824.06

Finding the Fourth Proportional to 20,923,255.20, 31,372,045.11 and 8,128,824.06

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Solution

The fourth proportional to 20,923,255.20, 31,372,045.11 and 8,128,824.06 is: 12,188,248.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923,255.20 : 31,372,045.11 = 8,128,824.06 : x
  2. Step 2: Convert to fraction form
    20,923,255.20/31,372,045.11 = 8,128,824.06/x
  3. Step 3: Cross multiply
    20,923,255.20x = 31,372,045.11 × 8,128,824.06
  4. Step 4: Simplify right side
    20,923,255.20x = 255,017,835,101,573.34
  5. Step 5: Solve for x
    x = 255,017,835,101,573.34/20,923,255.20
  6. Step 6: Final answer
    x = 12,188,248.56

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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.