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Finding the Third Proportional to 19,390 and 26,290.50

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Solution

The third proportional to 19,390 and 26,290.50 is: 35,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390 : 26,290.50 = 26,290.50 : x
  2. Step 2: Convert to fraction form
    19,390/26,290.50 = 26,290.50/x
  3. Step 3: Cross multiply
    19,390x = 26,290.50 × 26,290.50
  4. Step 4: Simplify right side
    19,390x = 691,190,390.25
  5. Step 5: Solve for x
    x = 691,190,390.25/19,390
  6. Step 6: Final answer
    x = 35,646.75

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.