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Finding the Third Proportional to 12,738.75 and 27,430.13

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Solution

The third proportional to 12,738.75 and 27,430.13 is: 59,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.75 : 27,430.13 = 27,430.13 : x
  2. Step 2: Convert to fraction form
    12,738.75/27,430.13 = 27,430.13/x
  3. Step 3: Cross multiply
    12,738.75x = 27,430.13 × 27,430.13
  4. Step 4: Simplify right side
    12,738.75x = 752,411,757.52
  5. Step 5: Solve for x
    x = 752,411,757.52/12,738.75
  6. Step 6: Final answer
    x = 59,064.80

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.