Finding the Fourth Proportional to 21,497,076.19, 29,631,388.57 and 14,525,576.29
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Solution
The fourth proportional to 21,497,076.19, 29,631,388.57 and 14,525,576.29 is: 20,021,931.89
Step by Step Solution
- Step 1: Write the proportion equation
21,497,076.19 : 29,631,388.57 = 14,525,576.29 : x - Step 2: Convert to fraction form
21,497,076.19/29,631,388.57 = 14,525,576.29/x - Step 3: Cross multiply
21,497,076.19x = 29,631,388.57 × 14,525,576.29 - Step 4: Simplify right side
21,497,076.19x = 430,412,995,252,169 - Step 5: Solve for x
x = 430,412,995,252,169/21,497,076.19 - Step 6: Final answer
x = 20,021,931.89
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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.