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Finding the Third Proportional to 7,128 and 13,104

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Solution

The third proportional to 7,128 and 13,104 is: 24,090.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128 : 13,104 = 13,104 : x
  2. Step 2: Convert to fraction form
    7,128/13,104 = 13,104/x
  3. Step 3: Cross multiply
    7,128x = 13,104 × 13,104
  4. Step 4: Simplify right side
    7,128x = 171,714,816
  5. Step 5: Solve for x
    x = 171,714,816/7,128
  6. Step 6: Final answer
    x = 24,090.18

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.