Finding the Fourth Proportional to 20,644,604.51, 28,489,664.99 and 11,352,773.75
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Solution
The fourth proportional to 20,644,604.51, 28,489,664.99 and 11,352,773.75 is: 15,666,888.69
Step by Step Solution
- Step 1: Write the proportion equation
20,644,604.51 : 28,489,664.99 = 11,352,773.75 : x - Step 2: Convert to fraction form
20,644,604.51/28,489,664.99 = 11,352,773.75/x - Step 3: Cross multiply
20,644,604.51x = 28,489,664.99 × 11,352,773.75 - Step 4: Simplify right side
20,644,604.51x = 323,436,720,730,699.62 - Step 5: Solve for x
x = 323,436,720,730,699.62/20,644,604.51 - Step 6: Final answer
x = 15,666,888.69
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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.