Finding the Fourth Proportional to 13,816.58, 20,724.84 and 6,416.99
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Solution
The fourth proportional to 13,816.58, 20,724.84 and 6,416.99 is: 9,625.47
Step by Step Solution
- Step 1: Write the proportion equation
13,816.58 : 20,724.84 = 6,416.99 : x - Step 2: Convert to fraction form
13,816.58/20,724.84 = 6,416.99/x - Step 3: Cross multiply
13,816.58x = 20,724.84 × 6,416.99 - Step 4: Simplify right side
13,816.58x = 132,990,987.41 - Step 5: Solve for x
x = 132,990,987.41/13,816.58 - Step 6: Final answer
x = 9,625.47
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1.5x scale
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.