Finding the Third Proportional to 12,489.19 and 18,987.75
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Solution
The third proportional to 12,489.19 and 18,987.75 is: 28,867.74
Step by Step Solution
- Step 1: Write the proportion equation
12,489.19 : 18,987.75 = 18,987.75 : x - Step 2: Convert to fraction form
12,489.19/18,987.75 = 18,987.75/x - Step 3: Cross multiply
12,489.19x = 18,987.75 × 18,987.75 - Step 4: Simplify right side
12,489.19x = 360,534,650.06 - Step 5: Solve for x
x = 360,534,650.06/12,489.19 - Step 6: Final answer
x = 28,867.74
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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.