Finding the Fourth Proportional to 21,368,936.04, 29,489,679.36 and 12,202,431.72
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Solution
The fourth proportional to 21,368,936.04, 29,489,679.36 and 12,202,431.72 is: 16,839,668.49
Step by Step Solution
- Step 1: Write the proportion equation
21,368,936.04 : 29,489,679.36 = 12,202,431.72 : x - Step 2: Convert to fraction form
21,368,936.04/29,489,679.36 = 12,202,431.72/x - Step 3: Cross multiply
21,368,936.04x = 29,489,679.36 × 12,202,431.72 - Step 4: Simplify right side
21,368,936.04x = 359,845,798,835,093.31 - Step 5: Solve for x
x = 359,845,798,835,093.31/21,368,936.04 - Step 6: Final answer
x = 16,839,668.49
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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.