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Finding the Third Proportional to 18,712 and 28,608

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Solution

The third proportional to 18,712 and 28,608 is: 43,737.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712 : 28,608 = 28,608 : x
  2. Step 2: Convert to fraction form
    18,712/28,608 = 28,608/x
  3. Step 3: Cross multiply
    18,712x = 28,608 × 28,608
  4. Step 4: Simplify right side
    18,712x = 818,417,664
  5. Step 5: Solve for x
    x = 818,417,664/18,712
  6. Step 6: Final answer
    x = 43,737.58

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.