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Finding the Third Proportional to 12,915,764,655 and 20,216,699,271

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Solution

The third proportional to 12,915,764,655 and 20,216,699,271 is: 31,644,655,994.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915,764,655 : 20,216,699,271 = 20,216,699,271 : x
  2. Step 2: Convert to fraction form
    12,915,764,655/20,216,699,271 = 20,216,699,271/x
  3. Step 3: Cross multiply
    12,915,764,655x = 20,216,699,271 × 20,216,699,271
  4. Step 4: Simplify right side
    12,915,764,655x = 408,714,929,414,051,921,920
  5. Step 5: Solve for x
    x = 408,714,929,414,051,921,920/12,915,764,655
  6. Step 6: Final answer
    x = 31,644,655,994.55

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.