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Finding the Third Proportional to 15,728,790 and 21,250,602

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Solution

The third proportional to 15,728,790 and 21,250,602 is: 28,710,923.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728,790 : 21,250,602 = 21,250,602 : x
  2. Step 2: Convert to fraction form
    15,728,790/21,250,602 = 21,250,602/x
  3. Step 3: Cross multiply
    15,728,790x = 21,250,602 × 21,250,602
  4. Step 4: Simplify right side
    15,728,790x = 451,588,085,362,404
  5. Step 5: Solve for x
    x = 451,588,085,362,404/15,728,790
  6. Step 6: Final answer
    x = 28,710,923.43

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.