Finding the Fourth Proportional to 18,425,664.18, 27,581,809.23 and 12,022,128.18
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Solution
The fourth proportional to 18,425,664.18, 27,581,809.23 and 12,022,128.18 is: 17,996,205.88
Step by Step Solution
- Step 1: Write the proportion equation
18,425,664.18 : 27,581,809.23 = 12,022,128.18 : x - Step 2: Convert to fraction form
18,425,664.18/27,581,809.23 = 12,022,128.18/x - Step 3: Cross multiply
18,425,664.18x = 27,581,809.23 × 12,022,128.18 - Step 4: Simplify right side
18,425,664.18x = 331,592,045,999,367.12 - Step 5: Solve for x
x = 331,592,045,999,367.12/18,425,664.18 - Step 6: Final answer
x = 17,996,205.88
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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.