Finding the Fourth Proportional to 20,426,715.11, 28,188,018.63 and 11,134,080.68
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Solution
The fourth proportional to 20,426,715.11, 28,188,018.63 and 11,134,080.68 is: 15,364,568.99
Step by Step Solution
- Step 1: Write the proportion equation
20,426,715.11 : 28,188,018.63 = 11,134,080.68 : x - Step 2: Convert to fraction form
20,426,715.11/28,188,018.63 = 11,134,080.68/x - Step 3: Cross multiply
20,426,715.11x = 28,188,018.63 × 11,134,080.68 - Step 4: Simplify right side
20,426,715.11x = 313,847,673,635,763.06 - Step 5: Solve for x
x = 313,847,673,635,763.06/20,426,715.11 - Step 6: Final answer
x = 15,364,568.99
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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.