Home / 20,515,222.48-28,310,657.52-11,347,857.76

Finding the Fourth Proportional to 20,515,222.48, 28,310,657.52 and 11,347,857.76

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Solution

The fourth proportional to 20,515,222.48, 28,310,657.52 and 11,347,857.76 is: 15,659,850.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,222.48 : 28,310,657.52 = 11,347,857.76 : x
  2. Step 2: Convert to fraction form
    20,515,222.48/28,310,657.52 = 11,347,857.76/x
  3. Step 3: Cross multiply
    20,515,222.48x = 28,310,657.52 × 11,347,857.76
  4. Step 4: Simplify right side
    20,515,222.48x = 321,265,314,629,034.38
  5. Step 5: Solve for x
    x = 321,265,314,629,034.38/20,515,222.48
  6. Step 6: Final answer
    x = 15,659,850.38

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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.