Home / 20,309,147.88-30,478,266.87-8,645,696.61

Finding the Fourth Proportional to 20,309,147.88, 30,478,266.87 and 8,645,696.61

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Solution

The fourth proportional to 20,309,147.88, 30,478,266.87 and 8,645,696.61 is: 12,974,736.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309,147.88 : 30,478,266.87 = 8,645,696.61 : x
  2. Step 2: Convert to fraction form
    20,309,147.88/30,478,266.87 = 8,645,696.61/x
  3. Step 3: Cross multiply
    20,309,147.88x = 30,478,266.87 × 8,645,696.61
  4. Step 4: Simplify right side
    20,309,147.88x = 263,505,848,556,634.31
  5. Step 5: Solve for x
    x = 263,505,848,556,634.31/20,309,147.88
  6. Step 6: Final answer
    x = 12,974,736.81

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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.