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Finding the Third Proportional to 9,000 and 19,702

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Solution

The third proportional to 9,000 and 19,702 is: 43,129.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000 : 19,702 = 19,702 : x
  2. Step 2: Convert to fraction form
    9,000/19,702 = 19,702/x
  3. Step 3: Cross multiply
    9,000x = 19,702 × 19,702
  4. Step 4: Simplify right side
    9,000x = 388,168,804
  5. Step 5: Solve for x
    x = 388,168,804/9,000
  6. Step 6: Final answer
    x = 43,129.87

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.