Home / 21,050,120.70-31,575,181.05-18,446,715.90

Finding the Fourth Proportional to 21,050,120.70, 31,575,181.05 and 18,446,715.90

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Solution

The fourth proportional to 21,050,120.70, 31,575,181.05 and 18,446,715.90 is: 27,670,073.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050,120.70 : 31,575,181.05 = 18,446,715.90 : x
  2. Step 2: Convert to fraction form
    21,050,120.70/31,575,181.05 = 18,446,715.90/x
  3. Step 3: Cross multiply
    21,050,120.70x = 31,575,181.05 × 18,446,715.90
  4. Step 4: Simplify right side
    21,050,120.70x = 582,458,394,320,413.62
  5. Step 5: Solve for x
    x = 582,458,394,320,413.62/21,050,120.70
  6. Step 6: Final answer
    x = 27,670,073.85

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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.