Finding the Fourth Proportional to 20,436,338.52, 28,201,543.74 and 11,268,978.84
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Solution
The fourth proportional to 20,436,338.52, 28,201,543.74 and 11,268,978.84 is: 15,550,858.06
Step by Step Solution
- Step 1: Write the proportion equation
20,436,338.52 : 28,201,543.74 = 11,268,978.84 : x - Step 2: Convert to fraction form
20,436,338.52/28,201,543.74 = 11,268,978.84/x - Step 3: Cross multiply
20,436,338.52x = 28,201,543.74 × 11,268,978.84 - Step 4: Simplify right side
20,436,338.52x = 317,802,599,661,394.44 - Step 5: Solve for x
x = 317,802,599,661,394.44/20,436,338.52 - Step 6: Final answer
x = 15,550,858.06
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.