Finding the Fourth Proportional to 21,351,957.68, 29,467,809.24 and 12,185,971.76
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Solution
The fourth proportional to 21,351,957.68, 29,467,809.24 and 12,185,971.76 is: 16,817,843.90
Step by Step Solution
- Step 1: Write the proportion equation
21,351,957.68 : 29,467,809.24 = 12,185,971.76 : x - Step 2: Convert to fraction form
21,351,957.68/29,467,809.24 = 12,185,971.76/x - Step 3: Cross multiply
21,351,957.68x = 29,467,809.24 × 12,185,971.76 - Step 4: Simplify right side
21,351,957.68x = 359,093,891,227,707.06 - Step 5: Solve for x
x = 359,093,891,227,707.06/21,351,957.68 - Step 6: Final answer
x = 16,817,843.90
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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.