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Finding the Third Proportional to 7,140 and 15,279

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Solution

The third proportional to 7,140 and 15,279 is: 32,695.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140 : 15,279 = 15,279 : x
  2. Step 2: Convert to fraction form
    7,140/15,279 = 15,279/x
  3. Step 3: Cross multiply
    7,140x = 15,279 × 15,279
  4. Step 4: Simplify right side
    7,140x = 233,447,841
  5. Step 5: Solve for x
    x = 233,447,841/7,140
  6. Step 6: Final answer
    x = 32,695.78

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.