Finding the Fourth Proportional to 21,692,642.16, 29,935,649.88 and 11,902,900.08
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Solution
The fourth proportional to 21,692,642.16, 29,935,649.88 and 11,902,900.08 is: 16,425,894.40
Step by Step Solution
- Step 1: Write the proportion equation
21,692,642.16 : 29,935,649.88 = 11,902,900.08 : x - Step 2: Convert to fraction form
21,692,642.16/29,935,649.88 = 11,902,900.08/x - Step 3: Cross multiply
21,692,642.16x = 29,935,649.88 × 11,902,900.08 - Step 4: Simplify right side
21,692,642.16x = 356,321,049,351,504 - Step 5: Solve for x
x = 356,321,049,351,504/21,692,642.16 - Step 6: Final answer
x = 16,425,894.40
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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.