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Finding the Third Proportional to 13,130 and 19,489

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Solution

The third proportional to 13,130 and 19,489 is: 28,927.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130 : 19,489 = 19,489 : x
  2. Step 2: Convert to fraction form
    13,130/19,489 = 19,489/x
  3. Step 3: Cross multiply
    13,130x = 19,489 × 19,489
  4. Step 4: Simplify right side
    13,130x = 379,821,121
  5. Step 5: Solve for x
    x = 379,821,121/13,130
  6. Step 6: Final answer
    x = 28,927.73

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.