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Finding the Third Proportional to 12,130 and 19,450

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Solution

The third proportional to 12,130 and 19,450 is: 31,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130 : 19,450 = 19,450 : x
  2. Step 2: Convert to fraction form
    12,130/19,450 = 19,450/x
  3. Step 3: Cross multiply
    12,130x = 19,450 × 19,450
  4. Step 4: Simplify right side
    12,130x = 378,302,500
  5. Step 5: Solve for x
    x = 378,302,500/12,130
  6. Step 6: Final answer
    x = 31,187.35

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.