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Finding the Third Proportional to 8,712 and 18,820.13

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Solution

The third proportional to 8,712 and 18,820.13 is: 40,656.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712 : 18,820.13 = 18,820.13 : x
  2. Step 2: Convert to fraction form
    8,712/18,820.13 = 18,820.13/x
  3. Step 3: Cross multiply
    8,712x = 18,820.13 × 18,820.13
  4. Step 4: Simplify right side
    8,712x = 354,197,105.02
  5. Step 5: Solve for x
    x = 354,197,105.02/8,712
  6. Step 6: Final answer
    x = 40,656.23

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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.