Finding the Fourth Proportional to 20,881,542.62, 31,318,580.97 and 13,285,945.82
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Solution
The fourth proportional to 20,881,542.62, 31,318,580.97 and 13,285,945.82 is: 19,926,543.62
Step by Step Solution
- Step 1: Write the proportion equation
20,881,542.62 : 31,318,580.97 = 13,285,945.82 : x - Step 2: Convert to fraction form
20,881,542.62/31,318,580.97 = 13,285,945.82/x - Step 3: Cross multiply
20,881,542.62x = 31,318,580.97 × 13,285,945.82 - Step 4: Simplify right side
20,881,542.62x = 416,096,969,926,703.06 - Step 5: Solve for x
x = 416,096,969,926,703.06/20,881,542.62 - Step 6: Final answer
x = 19,926,543.62
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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.