Home / 20,163,557,906.70-30,245,336,860.05-8,529,865,644.30

Finding the Fourth Proportional to 20,163,557,906.70, 30,245,336,860.05 and 8,529,865,644.30

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Solution

The fourth proportional to 20,163,557,906.70, 30,245,336,860.05 and 8,529,865,644.30 is: 12,794,798,466.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163,557,906.70 : 30,245,336,860.05 = 8,529,865,644.30 : x
  2. Step 2: Convert to fraction form
    20,163,557,906.70/30,245,336,860.05 = 8,529,865,644.30/x
  3. Step 3: Cross multiply
    20,163,557,906.70x = 30,245,336,860.05 × 8,529,865,644.30
  4. Step 4: Simplify right side
    20,163,557,906.70x = 257,988,659,782,820,921,344
  5. Step 5: Solve for x
    x = 257,988,659,782,820,921,344/20,163,557,906.70
  6. Step 6: Final answer
    x = 12,794,798,466.45

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Double scale
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Similar ratio
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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.