Finding the Third Proportional to 12,690 and 19,278
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Solution
The third proportional to 12,690 and 19,278 is: 29,286.15
Step by Step Solution
- Step 1: Write the proportion equation
12,690 : 19,278 = 19,278 : x - Step 2: Convert to fraction form
12,690/19,278 = 19,278/x - Step 3: Cross multiply
12,690x = 19,278 × 19,278 - Step 4: Simplify right side
12,690x = 371,641,284 - Step 5: Solve for x
x = 371,641,284/12,690 - Step 6: Final answer
x = 29,286.15
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These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.