Finding the Fourth Proportional to 19,943,386.83, 29,918,173.25 and 8,428,902.56
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Solution
The fourth proportional to 19,943,386.83, 29,918,173.25 and 8,428,902.56 is: 12,644,661.07
Step by Step Solution
- Step 1: Write the proportion equation
19,943,386.83 : 29,918,173.25 = 8,428,902.56 : x - Step 2: Convert to fraction form
19,943,386.83/29,918,173.25 = 8,428,902.56/x - Step 3: Cross multiply
19,943,386.83x = 29,918,173.25 × 8,428,902.56 - Step 4: Simplify right side
19,943,386.83x = 252,177,367,117,855.38 - Step 5: Solve for x
x = 252,177,367,117,855.38/19,943,386.83 - Step 6: Final answer
x = 12,644,661.07
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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.