Finding the Fourth Proportional to 21,330,683.86, 29,436,343.26 and 11,541,128.05
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Solution
The fourth proportional to 21,330,683.86, 29,436,343.26 and 11,541,128.05 is: 15,926,756.46
Step by Step Solution
- Step 1: Write the proportion equation
21,330,683.86 : 29,436,343.26 = 11,541,128.05 : x - Step 2: Convert to fraction form
21,330,683.86/29,436,343.26 = 11,541,128.05/x - Step 3: Cross multiply
21,330,683.86x = 29,436,343.26 × 11,541,128.05 - Step 4: Simplify right side
21,330,683.86x = 339,728,606,887,414.50 - Step 5: Solve for x
x = 339,728,606,887,414.50/21,330,683.86 - Step 6: Final answer
x = 15,926,756.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.