Finding the Fourth Proportional to 19,943,386.33, 29,918,172.50 and 8,428,902.06
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Solution
The fourth proportional to 19,943,386.33, 29,918,172.50 and 8,428,902.06 is: 12,644,660.33
Step by Step Solution
- Step 1: Write the proportion equation
19,943,386.33 : 29,918,172.50 = 8,428,902.06 : x - Step 2: Convert to fraction form
19,943,386.33/29,918,172.50 = 8,428,902.06/x - Step 3: Cross multiply
19,943,386.33x = 29,918,172.50 × 8,428,902.06 - Step 4: Simplify right side
19,943,386.33x = 252,177,345,891,480.78 - Step 5: Solve for x
x = 252,177,345,891,480.78/19,943,386.33 - Step 6: Final answer
x = 12,644,660.33
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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.