Finding the Fourth Proportional to 15,932.14, 21,986 and 8,761.72
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Solution
The fourth proportional to 15,932.14, 21,986 and 8,761.72 is: 12,090.98
Step by Step Solution
- Step 1: Write the proportion equation
15,932.14 : 21,986 = 8,761.72 : x - Step 2: Convert to fraction form
15,932.14/21,986 = 8,761.72/x - Step 3: Cross multiply
15,932.14x = 21,986 × 8,761.72 - Step 4: Simplify right side
15,932.14x = 192,635,175.92 - Step 5: Solve for x
x = 192,635,175.92/15,932.14 - Step 6: Final answer
x = 12,090.98
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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.