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Finding the Third Proportional to 15,481,800 and 21,653,880

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Solution

The third proportional to 15,481,800 and 21,653,880 is: 30,286,563.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481,800 : 21,653,880 = 21,653,880 : x
  2. Step 2: Convert to fraction form
    15,481,800/21,653,880 = 21,653,880/x
  3. Step 3: Cross multiply
    15,481,800x = 21,653,880 × 21,653,880
  4. Step 4: Simplify right side
    15,481,800x = 468,890,519,054,400
  5. Step 5: Solve for x
    x = 468,890,519,054,400/15,481,800
  6. Step 6: Final answer
    x = 30,286,563.52

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.