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Finding the Third Proportional to 15,481,816 and 21,653,900

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Solution

The third proportional to 15,481,816 and 21,653,900 is: 30,286,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481,816 : 21,653,900 = 21,653,900 : x
  2. Step 2: Convert to fraction form
    15,481,816/21,653,900 = 21,653,900/x
  3. Step 3: Cross multiply
    15,481,816x = 21,653,900 × 21,653,900
  4. Step 4: Simplify right side
    15,481,816x = 468,891,385,210,000
  5. Step 5: Solve for x
    x = 468,891,385,210,000/15,481,816
  6. Step 6: Final answer
    x = 30,286,588.16

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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.