Finding the Fourth Proportional to 19,847,716.40, 29,771,574.60 and 8,489,313.20
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Solution
The fourth proportional to 19,847,716.40, 29,771,574.60 and 8,489,313.20 is: 12,733,969.80
Step by Step Solution
- Step 1: Write the proportion equation
19,847,716.40 : 29,771,574.60 = 8,489,313.20 : x - Step 2: Convert to fraction form
19,847,716.40/29,771,574.60 = 8,489,313.20/x - Step 3: Cross multiply
19,847,716.40x = 29,771,574.60 × 8,489,313.20 - Step 4: Simplify right side
19,847,716.40x = 252,740,221,236,564.72 - Step 5: Solve for x
x = 252,740,221,236,564.72/19,847,716.40 - Step 6: Final answer
x = 12,733,969.80
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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.