Finding the Fourth Proportional to 18,378,045.30, 27,567,067.95 and 13,276,211.70
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Solution
The fourth proportional to 18,378,045.30, 27,567,067.95 and 13,276,211.70 is: 19,914,317.55
Step by Step Solution
- Step 1: Write the proportion equation
18,378,045.30 : 27,567,067.95 = 13,276,211.70 : x - Step 2: Convert to fraction form
18,378,045.30/27,567,067.95 = 13,276,211.70/x - Step 3: Cross multiply
18,378,045.30x = 27,567,067.95 × 13,276,211.70 - Step 4: Simplify right side
18,378,045.30x = 365,986,230,052,485 - Step 5: Solve for x
x = 365,986,230,052,485/18,378,045.30 - Step 6: Final answer
x = 19,914,317.55
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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.