Finding the Fourth Proportional to 19,689,961.42, 29,534,942.13 and 5,313,006.14
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Solution
The fourth proportional to 19,689,961.42, 29,534,942.13 and 5,313,006.14 is: 7,969,509.21
Step by Step Solution
- Step 1: Write the proportion equation
19,689,961.42 : 29,534,942.13 = 5,313,006.14 : x - Step 2: Convert to fraction form
19,689,961.42/29,534,942.13 = 5,313,006.14/x - Step 3: Cross multiply
19,689,961.42x = 29,534,942.13 × 5,313,006.14 - Step 4: Simplify right side
19,689,961.42x = 156,919,328,881,234.66 - Step 5: Solve for x
x = 156,919,328,881,234.66/19,689,961.42 - Step 6: Final answer
x = 7,969,509.21
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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.