Finding the Fourth Proportional to 21,415,592.76, 32,055,621.18 and 13,728,964.92
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Solution
The fourth proportional to 21,415,592.76, 32,055,621.18 and 13,728,964.92 is: 20,550,003.15
Step by Step Solution
- Step 1: Write the proportion equation
21,415,592.76 : 32,055,621.18 = 13,728,964.92 : x - Step 2: Convert to fraction form
21,415,592.76/32,055,621.18 = 13,728,964.92/x - Step 3: Cross multiply
21,415,592.76x = 32,055,621.18 × 13,728,964.92 - Step 4: Simplify right side
21,415,592.76x = 440,090,498,669,029 - Step 5: Solve for x
x = 440,090,498,669,029/21,415,592.76 - Step 6: Final answer
x = 20,550,003.15
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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.