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Finding the Third Proportional to 13,420,409 and 20,653,765

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Solution

The third proportional to 13,420,409 and 20,653,765 is: 31,785,768.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420,409 : 20,653,765 = 20,653,765 : x
  2. Step 2: Convert to fraction form
    13,420,409/20,653,765 = 20,653,765/x
  3. Step 3: Cross multiply
    13,420,409x = 20,653,765 × 20,653,765
  4. Step 4: Simplify right side
    13,420,409x = 426,578,008,675,225
  5. Step 5: Solve for x
    x = 426,578,008,675,225/13,420,409
  6. Step 6: Final answer
    x = 31,785,768.13

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.