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Finding the Third Proportional to 15,176 and 17,120

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Solution

The third proportional to 15,176 and 17,120 is: 19,313.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176 : 17,120 = 17,120 : x
  2. Step 2: Convert to fraction form
    15,176/17,120 = 17,120/x
  3. Step 3: Cross multiply
    15,176x = 17,120 × 17,120
  4. Step 4: Simplify right side
    15,176x = 293,094,400
  5. Step 5: Solve for x
    x = 293,094,400/15,176
  6. Step 6: Final answer
    x = 19,313.02

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.