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Finding the Third Proportional to 14,289.75 and 15,639.75

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Solution

The third proportional to 14,289.75 and 15,639.75 is: 17,117.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.75 : 15,639.75 = 15,639.75 : x
  2. Step 2: Convert to fraction form
    14,289.75/15,639.75 = 15,639.75/x
  3. Step 3: Cross multiply
    14,289.75x = 15,639.75 × 15,639.75
  4. Step 4: Simplify right side
    14,289.75x = 244,601,780.06
  5. Step 5: Solve for x
    x = 244,601,780.06/14,289.75
  6. Step 6: Final answer
    x = 17,117.29

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.