Home / 21,275,136,481.40-31,912,704,722.10-12,894,524,487.80

Finding the Fourth Proportional to 21,275,136,481.40, 31,912,704,722.10 and 12,894,524,487.80

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Solution

The fourth proportional to 21,275,136,481.40, 31,912,704,722.10 and 12,894,524,487.80 is: 19,341,786,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,136,481.40 : 31,912,704,722.10 = 12,894,524,487.80 : x
  2. Step 2: Convert to fraction form
    21,275,136,481.40/31,912,704,722.10 = 12,894,524,487.80/x
  3. Step 3: Cross multiply
    21,275,136,481.40x = 31,912,704,722.10 × 12,894,524,487.80
  4. Step 4: Simplify right side
    21,275,136,481.40x = 411,499,152,511,049,072,640
  5. Step 5: Solve for x
    x = 411,499,152,511,049,072,640/21,275,136,481.40
  6. Step 6: Final answer
    x = 19,341,786,731.70

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Double scale
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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.