Finding the Fourth Proportional to 13,639,543.74, 18,822,531.69 and 7,527,928.50
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Solution
The fourth proportional to 13,639,543.74, 18,822,531.69 and 7,527,928.50 is: 10,388,519.99
Step by Step Solution
- Step 1: Write the proportion equation
13,639,543.74 : 18,822,531.69 = 7,527,928.50 : x - Step 2: Convert to fraction form
13,639,543.74/18,822,531.69 = 7,527,928.50/x - Step 3: Cross multiply
13,639,543.74x = 18,822,531.69 × 7,527,928.50 - Step 4: Simplify right side
13,639,543.74x = 141,694,672,751,304.19 - Step 5: Solve for x
x = 141,694,672,751,304.19/13,639,543.74 - Step 6: Final answer
x = 10,388,519.99
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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.