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Finding the Third Proportional to 8,565 and 21,121.50

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Solution

The third proportional to 8,565 and 21,121.50 is: 52,086.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565 : 21,121.50 = 21,121.50 : x
  2. Step 2: Convert to fraction form
    8,565/21,121.50 = 21,121.50/x
  3. Step 3: Cross multiply
    8,565x = 21,121.50 × 21,121.50
  4. Step 4: Simplify right side
    8,565x = 446,117,762.25
  5. Step 5: Solve for x
    x = 446,117,762.25/8,565
  6. Step 6: Final answer
    x = 52,086.14

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Why These Related Problems?

These problems maintain the same ratio (2.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.