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Finding the Third Proportional to 15,368 and 19,684

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Solution

The third proportional to 15,368 and 19,684 is: 25,212.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368 : 19,684 = 19,684 : x
  2. Step 2: Convert to fraction form
    15,368/19,684 = 19,684/x
  3. Step 3: Cross multiply
    15,368x = 19,684 × 19,684
  4. Step 4: Simplify right side
    15,368x = 387,459,856
  5. Step 5: Solve for x
    x = 387,459,856/15,368
  6. Step 6: Final answer
    x = 25,212.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.