Finding the Fourth Proportional to 18,405,932.40, 27,608,639.40 and 8,308,537.20
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Solution
The fourth proportional to 18,405,932.40, 27,608,639.40 and 8,308,537.20 is: 12,462,688.80
Step by Step Solution
- Step 1: Write the proportion equation
18,405,932.40 : 27,608,639.40 = 8,308,537.20 : x - Step 2: Convert to fraction form
18,405,932.40/27,608,639.40 = 8,308,537.20/x - Step 3: Cross multiply
18,405,932.40x = 27,608,639.40 × 8,308,537.20 - Step 4: Simplify right side
18,405,932.40x = 229,387,407,496,285.69 - Step 5: Solve for x
x = 229,387,407,496,285.69/18,405,932.40 - Step 6: Final answer
x = 12,462,688.80
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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.