Finding the Fourth Proportional to 18,372,214.60, 27,558,321.90 and 11,989,673.80
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Solution
The fourth proportional to 18,372,214.60, 27,558,321.90 and 11,989,673.80 is: 17,984,510.70
Step by Step Solution
- Step 1: Write the proportion equation
18,372,214.60 : 27,558,321.90 = 11,989,673.80 : x - Step 2: Convert to fraction form
18,372,214.60/27,558,321.90 = 11,989,673.80/x - Step 3: Cross multiply
18,372,214.60x = 27,558,321.90 × 11,989,673.80 - Step 4: Simplify right side
18,372,214.60x = 330,415,290,056,396.25 - Step 5: Solve for x
x = 330,415,290,056,396.25/18,372,214.60 - Step 6: Final answer
x = 17,984,510.70
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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.