Finding the Fourth Proportional to 14,990,986.88, 20,687,568.84 and 8,115,468.96
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Solution
The fourth proportional to 14,990,986.88, 20,687,568.84 and 8,115,468.96 is: 11,199,350.92
Step by Step Solution
- Step 1: Write the proportion equation
14,990,986.88 : 20,687,568.84 = 8,115,468.96 : x - Step 2: Convert to fraction form
14,990,986.88/20,687,568.84 = 8,115,468.96/x - Step 3: Cross multiply
14,990,986.88x = 20,687,568.84 × 8,115,468.96 - Step 4: Simplify right side
14,990,986.88x = 167,889,322,778,883.22 - Step 5: Solve for x
x = 167,889,322,778,883.22/14,990,986.88 - Step 6: Final answer
x = 11,199,350.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.