Finding the Fourth Proportional to 21,637,321.98, 29,861,507.43 and 11,979,529.98
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Solution
The fourth proportional to 21,637,321.98, 29,861,507.43 and 11,979,529.98 is: 16,532,860.39
Step by Step Solution
- Step 1: Write the proportion equation
21,637,321.98 : 29,861,507.43 = 11,979,529.98 : x - Step 2: Convert to fraction form
21,637,321.98/29,861,507.43 = 11,979,529.98/x - Step 3: Cross multiply
21,637,321.98x = 29,861,507.43 × 11,979,529.98 - Step 4: Simplify right side
21,637,321.98x = 357,726,823,505,677.75 - Step 5: Solve for x
x = 357,726,823,505,677.75/21,637,321.98 - Step 6: Final answer
x = 16,532,860.39
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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.