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Finding the Third Proportional to 11,712 and 20,388

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Solution

The third proportional to 11,712 and 20,388 is: 35,491.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712 : 20,388 = 20,388 : x
  2. Step 2: Convert to fraction form
    11,712/20,388 = 20,388/x
  3. Step 3: Cross multiply
    11,712x = 20,388 × 20,388
  4. Step 4: Simplify right side
    11,712x = 415,670,544
  5. Step 5: Solve for x
    x = 415,670,544/11,712
  6. Step 6: Final answer
    x = 35,491.00

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Why These Related Problems?

These problems maintain the same ratio (1.74) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.