Finding the Fourth Proportional to 19,821,486.70, 29,723,372.70 and 7,686,917.20
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Solution
The fourth proportional to 19,821,486.70, 29,723,372.70 and 7,686,917.20 is: 11,526,940.86
Step by Step Solution
- Step 1: Write the proportion equation
19,821,486.70 : 29,723,372.70 = 7,686,917.20 : x - Step 2: Convert to fraction form
19,821,486.70/29,723,372.70 = 7,686,917.20/x - Step 3: Cross multiply
19,821,486.70x = 29,723,372.70 × 7,686,917.20 - Step 4: Simplify right side
19,821,486.70x = 228,481,104,849,640.44 - Step 5: Solve for x
x = 228,481,104,849,640.44/19,821,486.70 - Step 6: Final answer
x = 11,526,940.86
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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.