Finding the Fourth Proportional to 21,351,948.18, 29,467,796.13 and 12,185,962.26
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Solution
The fourth proportional to 21,351,948.18, 29,467,796.13 and 12,185,962.26 is: 16,817,830.79
Step by Step Solution
- Step 1: Write the proportion equation
21,351,948.18 : 29,467,796.13 = 12,185,962.26 : x - Step 2: Convert to fraction form
21,351,948.18/29,467,796.13 = 12,185,962.26/x - Step 3: Cross multiply
21,351,948.18x = 29,467,796.13 × 12,185,962.26 - Step 4: Simplify right side
21,351,948.18x = 359,093,451,525,554.06 - Step 5: Solve for x
x = 359,093,451,525,554.06/21,351,948.18 - Step 6: Final answer
x = 16,817,830.79
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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.