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Finding the Third Proportional to 15,569 and 18,303

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Solution

The third proportional to 15,569 and 18,303 is: 21,517.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,569 : 18,303 = 18,303 : x
  2. Step 2: Convert to fraction form
    15,569/18,303 = 18,303/x
  3. Step 3: Cross multiply
    15,569x = 18,303 × 18,303
  4. Step 4: Simplify right side
    15,569x = 334,999,809
  5. Step 5: Solve for x
    x = 334,999,809/15,569
  6. Step 6: Final answer
    x = 21,517.11

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.