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Finding the Third Proportional to 8,930.67 and 13,128.75

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Solution

The third proportional to 8,930.67 and 13,128.75 is: 19,300.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.67 : 13,128.75 = 13,128.75 : x
  2. Step 2: Convert to fraction form
    8,930.67/13,128.75 = 13,128.75/x
  3. Step 3: Cross multiply
    8,930.67x = 13,128.75 × 13,128.75
  4. Step 4: Simplify right side
    8,930.67x = 172,364,076.56
  5. Step 5: Solve for x
    x = 172,364,076.56/8,930.67
  6. Step 6: Final answer
    x = 19,300.24

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.