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Finding the Third Proportional to 21,942.75 and 31,918.13

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Solution

The third proportional to 21,942.75 and 31,918.13 is: 46,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,942.75 : 31,918.13 = 31,918.13 : x
  2. Step 2: Convert to fraction form
    21,942.75/31,918.13 = 31,918.13/x
  3. Step 3: Cross multiply
    21,942.75x = 31,918.13 × 31,918.13
  4. Step 4: Simplify right side
    21,942.75x = 1,018,766,703.52
  5. Step 5: Solve for x
    x = 1,018,766,703.52/21,942.75
  6. Step 6: Final answer
    x = 46,428.40

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.