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Finding the Third Proportional to 20,580,211 and 28,220,028

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Solution

The third proportional to 20,580,211 and 28,220,028 is: 38,695,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580,211 : 28,220,028 = 28,220,028 : x
  2. Step 2: Convert to fraction form
    20,580,211/28,220,028 = 28,220,028/x
  3. Step 3: Cross multiply
    20,580,211x = 28,220,028 × 28,220,028
  4. Step 4: Simplify right side
    20,580,211x = 796,369,980,320,784
  5. Step 5: Solve for x
    x = 796,369,980,320,784/20,580,211
  6. Step 6: Final answer
    x = 38,695,909.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.