Finding the Fourth Proportional to 12,191,427.20, 18,251,268.49 and 8,137,860.97
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Solution
The fourth proportional to 12,191,427.20, 18,251,268.49 and 8,137,860.97 is: 12,182,846.45
Step by Step Solution
- Step 1: Write the proportion equation
12,191,427.20 : 18,251,268.49 = 8,137,860.97 : x - Step 2: Convert to fraction form
12,191,427.20/18,251,268.49 = 8,137,860.97/x - Step 3: Cross multiply
12,191,427.20x = 18,251,268.49 × 8,137,860.97 - Step 4: Simplify right side
12,191,427.20x = 148,526,285,542,842.25 - Step 5: Solve for x
x = 148,526,285,542,842.25/12,191,427.20 - Step 6: Final answer
x = 12,182,846.45
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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.