Finding the Fourth Proportional to 15,474,540.84, 21,355,059.84 and 8,505,979.20
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Solution
The fourth proportional to 15,474,540.84, 21,355,059.84 and 8,505,979.20 is: 11,738,357.65
Step by Step Solution
- Step 1: Write the proportion equation
15,474,540.84 : 21,355,059.84 = 8,505,979.20 : x - Step 2: Convert to fraction form
15,474,540.84/21,355,059.84 = 8,505,979.20/x - Step 3: Cross multiply
15,474,540.84x = 21,355,059.84 × 8,505,979.20 - Step 4: Simplify right side
15,474,540.84x = 181,645,694,813,795.31 - Step 5: Solve for x
x = 181,645,694,813,795.31/15,474,540.84 - Step 6: Final answer
x = 11,738,357.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.