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Finding the Third Proportional to 21,333 and 28,543.50

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Solution

The third proportional to 21,333 and 28,543.50 is: 38,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333 : 28,543.50 = 28,543.50 : x
  2. Step 2: Convert to fraction form
    21,333/28,543.50 = 28,543.50/x
  3. Step 3: Cross multiply
    21,333x = 28,543.50 × 28,543.50
  4. Step 4: Simplify right side
    21,333x = 814,731,392.25
  5. Step 5: Solve for x
    x = 814,731,392.25/21,333
  6. Step 6: Final answer
    x = 38,191.13

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.