Finding the Fourth Proportional to 13,409.81, 20,114.94 and 4,644.99
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Solution
The fourth proportional to 13,409.81, 20,114.94 and 4,644.99 is: 6,967.57
Step by Step Solution
- Step 1: Write the proportion equation
13,409.81 : 20,114.94 = 4,644.99 : x - Step 2: Convert to fraction form
13,409.81/20,114.94 = 4,644.99/x - Step 3: Cross multiply
13,409.81x = 20,114.94 × 4,644.99 - Step 4: Simplify right side
13,409.81x = 93,433,695.15 - Step 5: Solve for x
x = 93,433,695.15/13,409.81 - Step 6: Final answer
x = 6,967.57
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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.