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Finding the Third Proportional to 18,697,137 and 28,168,728

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Solution

The third proportional to 18,697,137 and 28,168,728 is: 42,438,435.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697,137 : 28,168,728 = 28,168,728 : x
  2. Step 2: Convert to fraction form
    18,697,137/28,168,728 = 28,168,728/x
  3. Step 3: Cross multiply
    18,697,137x = 28,168,728 × 28,168,728
  4. Step 4: Simplify right side
    18,697,137x = 793,477,237,137,984
  5. Step 5: Solve for x
    x = 793,477,237,137,984/18,697,137
  6. Step 6: Final answer
    x = 42,438,435.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.