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Finding the Third Proportional to 7,168 and 15,140

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Solution

The third proportional to 7,168 and 15,140 is: 31,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168 : 15,140 = 15,140 : x
  2. Step 2: Convert to fraction form
    7,168/15,140 = 15,140/x
  3. Step 3: Cross multiply
    7,168x = 15,140 × 15,140
  4. Step 4: Simplify right side
    7,168x = 229,219,600
  5. Step 5: Solve for x
    x = 229,219,600/7,168
  6. Step 6: Final answer
    x = 31,978.18

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.