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Finding the Third Proportional to 21,370.50 and 28,599.75

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Solution

The third proportional to 21,370.50 and 28,599.75 is: 38,274.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.50 : 28,599.75 = 28,599.75 : x
  2. Step 2: Convert to fraction form
    21,370.50/28,599.75 = 28,599.75/x
  3. Step 3: Cross multiply
    21,370.50x = 28,599.75 × 28,599.75
  4. Step 4: Simplify right side
    21,370.50x = 817,945,700.06
  5. Step 5: Solve for x
    x = 817,945,700.06/21,370.50
  6. Step 6: Final answer
    x = 38,274.52

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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.