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Finding the Third Proportional to 19,998 and 21,861

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Solution

The third proportional to 19,998 and 21,861 is: 23,897.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998 : 21,861 = 21,861 : x
  2. Step 2: Convert to fraction form
    19,998/21,861 = 21,861/x
  3. Step 3: Cross multiply
    19,998x = 21,861 × 21,861
  4. Step 4: Simplify right side
    19,998x = 477,903,321
  5. Step 5: Solve for x
    x = 477,903,321/19,998
  6. Step 6: Final answer
    x = 23,897.56

Related Problems

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.