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Finding the Third Proportional to 13,131,440 and 20,171,512

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Solution

The third proportional to 13,131,440 and 20,171,512 is: 30,985,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131,440 : 20,171,512 = 20,171,512 : x
  2. Step 2: Convert to fraction form
    13,131,440/20,171,512 = 20,171,512/x
  3. Step 3: Cross multiply
    13,131,440x = 20,171,512 × 20,171,512
  4. Step 4: Simplify right side
    13,131,440x = 406,889,896,366,144
  5. Step 5: Solve for x
    x = 406,889,896,366,144/13,131,440
  6. Step 6: Final answer
    x = 30,985,931.20

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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.