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Finding the Third Proportional to 6,120 and 13,211.75

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Solution

The third proportional to 6,120 and 13,211.75 is: 28,521.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,120 : 13,211.75 = 13,211.75 : x
  2. Step 2: Convert to fraction form
    6,120/13,211.75 = 13,211.75/x
  3. Step 3: Cross multiply
    6,120x = 13,211.75 × 13,211.75
  4. Step 4: Simplify right side
    6,120x = 174,550,338.06
  5. Step 5: Solve for x
    x = 174,550,338.06/6,120
  6. Step 6: Final answer
    x = 28,521.30

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.