Finding the Fourth Proportional to 18,372,216.60, 27,558,324.90 and 11,989,675.80
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Solution
The fourth proportional to 18,372,216.60, 27,558,324.90 and 11,989,675.80 is: 17,984,513.70
Step by Step Solution
- Step 1: Write the proportion equation
18,372,216.60 : 27,558,324.90 = 11,989,675.80 : x - Step 2: Convert to fraction form
18,372,216.60/27,558,324.90 = 11,989,675.80/x - Step 3: Cross multiply
18,372,216.60x = 27,558,324.90 × 11,989,675.80 - Step 4: Simplify right side
18,372,216.60x = 330,415,381,142,067.44 - Step 5: Solve for x
x = 330,415,381,142,067.44/18,372,216.60 - Step 6: Final answer
x = 17,984,513.70
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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.