Finding the Fourth Proportional to 12,336,939.36, 18,509,542.47 and 4,255,493.22
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Solution
The fourth proportional to 12,336,939.36, 18,509,542.47 and 4,255,493.22 is: 6,384,665.61
Step by Step Solution
- Step 1: Write the proportion equation
12,336,939.36 : 18,509,542.47 = 4,255,493.22 : x - Step 2: Convert to fraction form
12,336,939.36/18,509,542.47 = 4,255,493.22/x - Step 3: Cross multiply
12,336,939.36x = 18,509,542.47 × 4,255,493.22 - Step 4: Simplify right side
12,336,939.36x = 78,767,232,486,387.05 - Step 5: Solve for x
x = 78,767,232,486,387.05/12,336,939.36 - Step 6: Final answer
x = 6,384,665.61
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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.