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Finding the Third Proportional to 20,219.63 and 28,279.13

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Solution

The third proportional to 20,219.63 and 28,279.13 is: 39,551.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.63 : 28,279.13 = 28,279.13 : x
  2. Step 2: Convert to fraction form
    20,219.63/28,279.13 = 28,279.13/x
  3. Step 3: Cross multiply
    20,219.63x = 28,279.13 × 28,279.13
  4. Step 4: Simplify right side
    20,219.63x = 799,708,910.77
  5. Step 5: Solve for x
    x = 799,708,910.77/20,219.63
  6. Step 6: Final answer
    x = 39,551.12

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.