Home / 20,829,005-31,248,495.78-8,691,716.73

Finding the Fourth Proportional to 20,829,005, 31,248,495.78 and 8,691,716.73

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Solution

The fourth proportional to 20,829,005, 31,248,495.78 and 8,691,716.73 is: 13,039,656.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829,005 : 31,248,495.78 = 8,691,716.73 : x
  2. Step 2: Convert to fraction form
    20,829,005/31,248,495.78 = 8,691,716.73/x
  3. Step 3: Cross multiply
    20,829,005x = 31,248,495.78 × 8,691,716.73
  4. Step 4: Simplify right side
    20,829,005x = 271,603,073,558,360.44
  5. Step 5: Solve for x
    x = 271,603,073,558,360.44/20,829,005
  6. Step 6: Final answer
    x = 13,039,656.65

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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.