Finding the Fourth Proportional to 13,207,986.60, 19,811,979.90 and 5,649,714.60
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Solution
The fourth proportional to 13,207,986.60, 19,811,979.90 and 5,649,714.60 is: 8,474,571.90
Step by Step Solution
- Step 1: Write the proportion equation
13,207,986.60 : 19,811,979.90 = 5,649,714.60 : x - Step 2: Convert to fraction form
13,207,986.60/19,811,979.90 = 5,649,714.60/x - Step 3: Cross multiply
13,207,986.60x = 19,811,979.90 × 5,649,714.60 - Step 4: Simplify right side
13,207,986.60x = 111,932,032,095,936.53 - Step 5: Solve for x
x = 111,932,032,095,936.53/13,207,986.60 - Step 6: Final answer
x = 8,474,571.90
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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.