Home / 20,515,072.80-30,768,672.60-6,138,609.60

Finding the Fourth Proportional to 20,515,072.80, 30,768,672.60 and 6,138,609.60

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Solution

The fourth proportional to 20,515,072.80, 30,768,672.60 and 6,138,609.60 is: 9,206,736.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,072.80 : 30,768,672.60 = 6,138,609.60 : x
  2. Step 2: Convert to fraction form
    20,515,072.80/30,768,672.60 = 6,138,609.60/x
  3. Step 3: Cross multiply
    20,515,072.80x = 30,768,672.60 × 6,138,609.60
  4. Step 4: Simplify right side
    20,515,072.80x = 188,876,869,001,616.97
  5. Step 5: Solve for x
    x = 188,876,869,001,616.97/20,515,072.80
  6. Step 6: Final answer
    x = 9,206,736.47

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1.5x scale

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.