Finding the Fourth Proportional to 18,907,911.27, 26,104,985.10 and 15,431,554.62
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Solution
The fourth proportional to 18,907,911.27, 26,104,985.10 and 15,431,554.62 is: 21,305,394.22
Step by Step Solution
- Step 1: Write the proportion equation
18,907,911.27 : 26,104,985.10 = 15,431,554.62 : x - Step 2: Convert to fraction form
18,907,911.27/26,104,985.10 = 15,431,554.62/x - Step 3: Cross multiply
18,907,911.27x = 26,104,985.10 × 15,431,554.62 - Step 4: Simplify right side
18,907,911.27x = 402,840,503,424,936.19 - Step 5: Solve for x
x = 402,840,503,424,936.19/18,907,911.27 - Step 6: Final answer
x = 21,305,394.22
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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.