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Finding the Third Proportional to 9,915,624 and 21,021,840

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Solution

The third proportional to 9,915,624 and 21,021,840 is: 44,567,821.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915,624 : 21,021,840 = 21,021,840 : x
  2. Step 2: Convert to fraction form
    9,915,624/21,021,840 = 21,021,840/x
  3. Step 3: Cross multiply
    9,915,624x = 21,021,840 × 21,021,840
  4. Step 4: Simplify right side
    9,915,624x = 441,917,756,985,600
  5. Step 5: Solve for x
    x = 441,917,756,985,600/9,915,624
  6. Step 6: Final answer
    x = 44,567,821.15

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.