Finding the Fourth Proportional to 18,128,979.68, 27,198,452.16 and 5,349,484.64
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Solution
The fourth proportional to 18,128,979.68, 27,198,452.16 and 5,349,484.64 is: 8,025,697.23
Step by Step Solution
- Step 1: Write the proportion equation
18,128,979.68 : 27,198,452.16 = 5,349,484.64 : x - Step 2: Convert to fraction form
18,128,979.68/27,198,452.16 = 5,349,484.64/x - Step 3: Cross multiply
18,128,979.68x = 27,198,452.16 × 5,349,484.64 - Step 4: Simplify right side
18,128,979.68x = 145,497,702,061,694.81 - Step 5: Solve for x
x = 145,497,702,061,694.81/18,128,979.68 - Step 6: Final answer
x = 8,025,697.23
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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.