Finding the Fourth Proportional to 28,190,464.62, 38,903,910.56 and 15,800,787.03
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Solution
The fourth proportional to 28,190,464.62, 38,903,910.56 and 15,800,787.03 is: 21,805,685.49
Step by Step Solution
- Step 1: Write the proportion equation
28,190,464.62 : 38,903,910.56 = 15,800,787.03 : x - Step 2: Convert to fraction form
28,190,464.62/38,903,910.56 = 15,800,787.03/x - Step 3: Cross multiply
28,190,464.62x = 38,903,910.56 × 15,800,787.03 - Step 4: Simplify right side
28,190,464.62x = 614,712,405,392,728 - Step 5: Solve for x
x = 614,712,405,392,728/28,190,464.62 - Step 6: Final answer
x = 21,805,685.49
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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.