Finding the Fourth Proportional to 21,490,977.75, 29,657,253.11 and 11,701,421.97
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Solution
The fourth proportional to 21,490,977.75, 29,657,253.11 and 11,701,421.97 is: 16,147,801.05
Step by Step Solution
- Step 1: Write the proportion equation
21,490,977.75 : 29,657,253.11 = 11,701,421.97 : x - Step 2: Convert to fraction form
21,490,977.75/29,657,253.11 = 11,701,421.97/x - Step 3: Cross multiply
21,490,977.75x = 29,657,253.11 × 11,701,421.97 - Step 4: Simplify right side
21,490,977.75x = 347,032,033,052,697.75 - Step 5: Solve for x
x = 347,032,033,052,697.75/21,490,977.75 - Step 6: Final answer
x = 16,147,801.05
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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.