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Finding the Third Proportional to 6,900.75 and 14,720.25

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Solution

The third proportional to 6,900.75 and 14,720.25 is: 31,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.75 : 14,720.25 = 14,720.25 : x
  2. Step 2: Convert to fraction form
    6,900.75/14,720.25 = 14,720.25/x
  3. Step 3: Cross multiply
    6,900.75x = 14,720.25 × 14,720.25
  4. Step 4: Simplify right side
    6,900.75x = 216,685,760.06
  5. Step 5: Solve for x
    x = 216,685,760.06/6,900.75
  6. Step 6: Final answer
    x = 31,400.32

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.