Finding the Fourth Proportional to 18,843,794.16, 28,265,088.36 and 7,919,771.28
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Solution
The fourth proportional to 18,843,794.16, 28,265,088.36 and 7,919,771.28 is: 11,879,403.54
Step by Step Solution
- Step 1: Write the proportion equation
18,843,794.16 : 28,265,088.36 = 7,919,771.28 : x - Step 2: Convert to fraction form
18,843,794.16/28,265,088.36 = 7,919,771.28/x - Step 3: Cross multiply
18,843,794.16x = 28,265,088.36 × 7,919,771.28 - Step 4: Simplify right side
18,843,794.16x = 223,853,035,020,190.31 - Step 5: Solve for x
x = 223,853,035,020,190.31/18,843,794.16 - Step 6: Final answer
x = 11,879,403.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.