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Finding the Third Proportional to 12,117 and 17,775.75

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Solution

The third proportional to 12,117 and 17,775.75 is: 26,077.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117 : 17,775.75 = 17,775.75 : x
  2. Step 2: Convert to fraction form
    12,117/17,775.75 = 17,775.75/x
  3. Step 3: Cross multiply
    12,117x = 17,775.75 × 17,775.75
  4. Step 4: Simplify right side
    12,117x = 315,977,288.06
  5. Step 5: Solve for x
    x = 315,977,288.06/12,117
  6. Step 6: Final answer
    x = 26,077.19

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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.