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Finding the Third Proportional to 15,481,808 and 21,653,892

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Solution

The third proportional to 15,481,808 and 21,653,892 is: 30,286,581.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481,808 : 21,653,892 = 21,653,892 : x
  2. Step 2: Convert to fraction form
    15,481,808/21,653,892 = 21,653,892/x
  3. Step 3: Cross multiply
    15,481,808x = 21,653,892 × 21,653,892
  4. Step 4: Simplify right side
    15,481,808x = 468,891,038,747,664
  5. Step 5: Solve for x
    x = 468,891,038,747,664/15,481,808
  6. Step 6: Final answer
    x = 30,286,581.43

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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.