Finding the Fourth Proportional to 12,190,689.60, 18,283,236.12 and 7,268,114.16
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Solution
The fourth proportional to 12,190,689.60, 18,283,236.12 and 7,268,114.16 is: 10,900,502.90
Step by Step Solution
- Step 1: Write the proportion equation
12,190,689.60 : 18,283,236.12 = 7,268,114.16 : x - Step 2: Convert to fraction form
12,190,689.60/18,283,236.12 = 7,268,114.16/x - Step 3: Cross multiply
12,190,689.60x = 18,283,236.12 × 7,268,114.16 - Step 4: Simplify right side
12,190,689.60x = 132,884,647,334,395.47 - Step 5: Solve for x
x = 132,884,647,334,395.47/12,190,689.60 - Step 6: Final answer
x = 10,900,502.90
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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.