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Finding the Third Proportional to 12,820.50 and 27,585

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Solution

The third proportional to 12,820.50 and 27,585 is: 59,352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.50 : 27,585 = 27,585 : x
  2. Step 2: Convert to fraction form
    12,820.50/27,585 = 27,585/x
  3. Step 3: Cross multiply
    12,820.50x = 27,585 × 27,585
  4. Step 4: Simplify right side
    12,820.50x = 760,932,225
  5. Step 5: Solve for x
    x = 760,932,225/12,820.50
  6. Step 6: Final answer
    x = 59,352.77

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.