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Finding the Third Proportional to 21,147.75 and 30,223.13

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Solution

The third proportional to 21,147.75 and 30,223.13 is: 43,193.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.75 : 30,223.13 = 30,223.13 : x
  2. Step 2: Convert to fraction form
    21,147.75/30,223.13 = 30,223.13/x
  3. Step 3: Cross multiply
    21,147.75x = 30,223.13 × 30,223.13
  4. Step 4: Simplify right side
    21,147.75x = 913,437,284.77
  5. Step 5: Solve for x
    x = 913,437,284.77/21,147.75
  6. Step 6: Final answer
    x = 43,193.12

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.