Finding the Fourth Proportional to 18,407,421.80, 27,611,132.70 and 13,305,588.20
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Solution
The fourth proportional to 18,407,421.80, 27,611,132.70 and 13,305,588.20 is: 19,958,382.30
Step by Step Solution
- Step 1: Write the proportion equation
18,407,421.80 : 27,611,132.70 = 13,305,588.20 : x - Step 2: Convert to fraction form
18,407,421.80/27,611,132.70 = 13,305,588.20/x - Step 3: Cross multiply
18,407,421.80x = 27,611,132.70 × 13,305,588.20 - Step 4: Simplify right side
18,407,421.80x = 367,382,361,441,754.12 - Step 5: Solve for x
x = 367,382,361,441,754.12/18,407,421.80 - Step 6: Final answer
x = 19,958,382.30
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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.