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Finding the Third Proportional to 11,440 and 19,080

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Solution

The third proportional to 11,440 and 19,080 is: 31,822.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440 : 19,080 = 19,080 : x
  2. Step 2: Convert to fraction form
    11,440/19,080 = 19,080/x
  3. Step 3: Cross multiply
    11,440x = 19,080 × 19,080
  4. Step 4: Simplify right side
    11,440x = 364,046,400
  5. Step 5: Solve for x
    x = 364,046,400/11,440
  6. Step 6: Final answer
    x = 31,822.24

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.