Finding the Fourth Proportional to 20,605,799.36, 30,879,640.22 and 11,387,922.81
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Solution
The fourth proportional to 20,605,799.36, 30,879,640.22 and 11,387,922.81 is: 17,065,824.68
Step by Step Solution
- Step 1: Write the proportion equation
20,605,799.36 : 30,879,640.22 = 11,387,922.81 : x - Step 2: Convert to fraction form
20,605,799.36/30,879,640.22 = 11,387,922.81/x - Step 3: Cross multiply
20,605,799.36x = 30,879,640.22 × 11,387,922.81 - Step 4: Simplify right side
20,605,799.36x = 351,654,959,168,991.81 - Step 5: Solve for x
x = 351,654,959,168,991.81/20,605,799.36 - Step 6: Final answer
x = 17,065,824.68
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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.