Home / 20,516,830.20-30,775,245.30-20,218,231.80

Finding the Fourth Proportional to 20,516,830.20, 30,775,245.30 and 20,218,231.80

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Solution

The fourth proportional to 20,516,830.20, 30,775,245.30 and 20,218,231.80 is: 30,327,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516,830.20 : 30,775,245.30 = 20,218,231.80 : x
  2. Step 2: Convert to fraction form
    20,516,830.20/30,775,245.30 = 20,218,231.80/x
  3. Step 3: Cross multiply
    20,516,830.20x = 30,775,245.30 × 20,218,231.80
  4. Step 4: Simplify right side
    20,516,830.20x = 622,221,043,177,260.62
  5. Step 5: Solve for x
    x = 622,221,043,177,260.62/20,516,830.20
  6. Step 6: Final answer
    x = 30,327,347.70

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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.