Finding the Fourth Proportional to 19,370,428.80, 29,045,145.60 and 7,998,028.80
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Solution
The fourth proportional to 19,370,428.80, 29,045,145.60 and 7,998,028.80 is: 11,992,708.75
Step by Step Solution
- Step 1: Write the proportion equation
19,370,428.80 : 29,045,145.60 = 7,998,028.80 : x - Step 2: Convert to fraction form
19,370,428.80/29,045,145.60 = 7,998,028.80/x - Step 3: Cross multiply
19,370,428.80x = 29,045,145.60 × 7,998,028.80 - Step 4: Simplify right side
19,370,428.80x = 232,303,911,008,993.28 - Step 5: Solve for x
x = 232,303,911,008,993.28/19,370,428.80 - Step 6: Final answer
x = 11,992,708.75
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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.