Finding the Fourth Proportional to 20,986,365.23, 28,960,419.41 and 11,693,455.14
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Solution
The fourth proportional to 20,986,365.23, 28,960,419.41 and 11,693,455.14 is: 16,136,542.06
Step by Step Solution
- Step 1: Write the proportion equation
20,986,365.23 : 28,960,419.41 = 11,693,455.14 : x - Step 2: Convert to fraction form
20,986,365.23/28,960,419.41 = 11,693,455.14/x - Step 3: Cross multiply
20,986,365.23x = 28,960,419.41 × 11,693,455.14 - Step 4: Simplify right side
20,986,365.23x = 338,647,365,206,420.31 - Step 5: Solve for x
x = 338,647,365,206,420.31/20,986,365.23 - Step 6: Final answer
x = 16,136,542.06
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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.