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Finding the Third Proportional to 15,384 and 21,999.75

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Solution

The third proportional to 15,384 and 21,999.75 is: 31,460.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384 : 21,999.75 = 21,999.75 : x
  2. Step 2: Convert to fraction form
    15,384/21,999.75 = 21,999.75/x
  3. Step 3: Cross multiply
    15,384x = 21,999.75 × 21,999.75
  4. Step 4: Simplify right side
    15,384x = 483,989,000.06
  5. Step 5: Solve for x
    x = 483,989,000.06/15,384
  6. Step 6: Final answer
    x = 31,460.54

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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.