Finding the Fourth Proportional to 21,509,534.46, 29,682,783.82 and 11,720,059.09
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Solution
The fourth proportional to 21,509,534.46, 29,682,783.82 and 11,720,059.09 is: 16,173,477.90
Step by Step Solution
- Step 1: Write the proportion equation
21,509,534.46 : 29,682,783.82 = 11,720,059.09 : x - Step 2: Convert to fraction form
21,509,534.46/29,682,783.82 = 11,720,059.09/x - Step 3: Cross multiply
21,509,534.46x = 29,682,783.82 × 11,720,059.09 - Step 4: Simplify right side
21,509,534.46x = 347,883,980,266,539.06 - Step 5: Solve for x
x = 347,883,980,266,539.06/21,509,534.46 - Step 6: Final answer
x = 16,173,477.90
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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.