Finding the Fourth Proportional to 21,816.72, 32,730 and 7,965.72
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Solution
The fourth proportional to 21,816.72, 32,730 and 7,965.72 is: 11,950.38
Step by Step Solution
- Step 1: Write the proportion equation
21,816.72 : 32,730 = 7,965.72 : x - Step 2: Convert to fraction form
21,816.72/32,730 = 7,965.72/x - Step 3: Cross multiply
21,816.72x = 32,730 × 7,965.72 - Step 4: Simplify right side
21,816.72x = 260,718,015.60 - Step 5: Solve for x
x = 260,718,015.60/21,816.72 - Step 6: Final answer
x = 11,950.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.