Finding the Fourth Proportional to 12,137,939.49, 18,209,533.62 and 6,457,338.21
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Solution
The fourth proportional to 12,137,939.49, 18,209,533.62 and 6,457,338.21 is: 9,687,403.48
Step by Step Solution
- Step 1: Write the proportion equation
12,137,939.49 : 18,209,533.62 = 6,457,338.21 : x - Step 2: Convert to fraction form
12,137,939.49/18,209,533.62 = 6,457,338.21/x - Step 3: Cross multiply
12,137,939.49x = 18,209,533.62 × 6,457,338.21 - Step 4: Simplify right side
12,137,939.49x = 117,585,117,230,705.62 - Step 5: Solve for x
x = 117,585,117,230,705.62/12,137,939.49 - Step 6: Final answer
x = 9,687,403.48
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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.