Finding the Fourth Proportional to 15,419,154.19, 21,278,457.79 and 8,448,724.10
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Solution
The fourth proportional to 15,419,154.19, 21,278,457.79 and 8,448,724.10 is: 11,659,252.95
Step by Step Solution
- Step 1: Write the proportion equation
15,419,154.19 : 21,278,457.79 = 8,448,724.10 : x - Step 2: Convert to fraction form
15,419,154.19/21,278,457.79 = 8,448,724.10/x - Step 3: Cross multiply
15,419,154.19x = 21,278,457.79 × 8,448,724.10 - Step 4: Simplify right side
15,419,154.19x = 179,775,819,034,813.47 - Step 5: Solve for x
x = 179,775,819,034,813.47/15,419,154.19 - Step 6: Final answer
x = 11,659,252.95
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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.