Finding the Fourth Proportional to 18,440,990.92, 25,424,911.38 and 15,121,053.64
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Solution
The fourth proportional to 18,440,990.92, 25,424,911.38 and 15,121,053.64 is: 20,847,656.75
Step by Step Solution
- Step 1: Write the proportion equation
18,440,990.92 : 25,424,911.38 = 15,121,053.64 : x - Step 2: Convert to fraction form
18,440,990.92/25,424,911.38 = 15,121,053.64/x - Step 3: Cross multiply
18,440,990.92x = 25,424,911.38 × 15,121,053.64 - Step 4: Simplify right side
18,440,990.92x = 384,451,448,769,226.44 - Step 5: Solve for x
x = 384,451,448,769,226.44/18,440,990.92 - Step 6: Final answer
x = 20,847,656.75
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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.