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Finding the Third Proportional to 15,481,818 and 21,653,903

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Solution

The third proportional to 15,481,818 and 21,653,903 is: 30,286,592.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481,818 : 21,653,903 = 21,653,903 : x
  2. Step 2: Convert to fraction form
    15,481,818/21,653,903 = 21,653,903/x
  3. Step 3: Cross multiply
    15,481,818x = 21,653,903 × 21,653,903
  4. Step 4: Simplify right side
    15,481,818x = 468,891,515,133,409
  5. Step 5: Solve for x
    x = 468,891,515,133,409/15,481,818
  6. Step 6: Final answer
    x = 30,286,592.64

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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.