Finding the Fourth Proportional to 20,463,134.11, 28,238,133.43 and 11,641,754.80
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Solution
The fourth proportional to 20,463,134.11, 28,238,133.43 and 11,641,754.80 is: 16,065,057.47
Step by Step Solution
- Step 1: Write the proportion equation
20,463,134.11 : 28,238,133.43 = 11,641,754.80 : x - Step 2: Convert to fraction form
20,463,134.11/28,238,133.43 = 11,641,754.80/x - Step 3: Cross multiply
20,463,134.11x = 28,238,133.43 × 11,641,754.80 - Step 4: Simplify right side
20,463,134.11x = 328,741,425,401,743 - Step 5: Solve for x
x = 328,741,425,401,743/20,463,134.11 - Step 6: Final answer
x = 16,065,057.47
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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.