Home / 20,505,844.20-30,758,766.30-20,186,979.60

Finding the Fourth Proportional to 20,505,844.20, 30,758,766.30 and 20,186,979.60

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Solution

The fourth proportional to 20,505,844.20, 30,758,766.30 and 20,186,979.60 is: 30,280,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505,844.20 : 30,758,766.30 = 20,186,979.60 : x
  2. Step 2: Convert to fraction form
    20,505,844.20/30,758,766.30 = 20,186,979.60/x
  3. Step 3: Cross multiply
    20,505,844.20x = 30,758,766.30 × 20,186,979.60
  4. Step 4: Simplify right side
    20,505,844.20x = 620,926,587,819,267.50
  5. Step 5: Solve for x
    x = 620,926,587,819,267.50/20,505,844.20
  6. Step 6: Final answer
    x = 30,280,469.40

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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.