Home / 20,188,782.86-27,860,378.30-11,021,425.61

Finding the Fourth Proportional to 20,188,782.86, 27,860,378.30 and 11,021,425.61

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Solution

The fourth proportional to 20,188,782.86, 27,860,378.30 and 11,021,425.61 is: 15,209,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188,782.86 : 27,860,378.30 = 11,021,425.61 : x
  2. Step 2: Convert to fraction form
    20,188,782.86/27,860,378.30 = 11,021,425.61/x
  3. Step 3: Cross multiply
    20,188,782.86x = 27,860,378.30 × 11,021,425.61
  4. Step 4: Simplify right side
    20,188,782.86x = 307,061,086,705,499.25
  5. Step 5: Solve for x
    x = 307,061,086,705,499.25/20,188,782.86
  6. Step 6: Final answer
    x = 15,209,489.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.