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Finding the Third Proportional to 18,916 and 23,140

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Solution

The third proportional to 18,916 and 23,140 is: 28,307.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916 : 23,140 = 23,140 : x
  2. Step 2: Convert to fraction form
    18,916/23,140 = 23,140/x
  3. Step 3: Cross multiply
    18,916x = 23,140 × 23,140
  4. Step 4: Simplify right side
    18,916x = 535,459,600
  5. Step 5: Solve for x
    x = 535,459,600/18,916
  6. Step 6: Final answer
    x = 28,307.23

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.