Finding the Fourth Proportional to 28,546,521.92, 39,394,318.56 and 15,493,799.60
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Solution
The fourth proportional to 28,546,521.92, 39,394,318.56 and 15,493,799.60 is: 21,381,507.66
Step by Step Solution
- Step 1: Write the proportion equation
28,546,521.92 : 39,394,318.56 = 15,493,799.60 : x - Step 2: Convert to fraction form
28,546,521.92/39,394,318.56 = 15,493,799.60/x - Step 3: Cross multiply
28,546,521.92x = 39,394,318.56 × 15,493,799.60 - Step 4: Simplify right side
28,546,521.92x = 610,367,677,147,200.62 - Step 5: Solve for x
x = 610,367,677,147,200.62/28,546,521.92 - Step 6: Final answer
x = 21,381,507.66
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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.