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Finding the Third Proportional to 13,690 and 19,368

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Solution

The third proportional to 13,690 and 19,368 is: 27,400.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690 : 19,368 = 19,368 : x
  2. Step 2: Convert to fraction form
    13,690/19,368 = 19,368/x
  3. Step 3: Cross multiply
    13,690x = 19,368 × 19,368
  4. Step 4: Simplify right side
    13,690x = 375,119,424
  5. Step 5: Solve for x
    x = 375,119,424/13,690
  6. Step 6: Final answer
    x = 27,400.98

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.