Finding the Fourth Proportional to 13,309,611.49, 18,367,159.78 and 7,198,039.99
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Solution
The fourth proportional to 13,309,611.49, 18,367,159.78 and 7,198,039.99 is: 9,933,238.90
Step by Step Solution
- Step 1: Write the proportion equation
13,309,611.49 : 18,367,159.78 = 7,198,039.99 : x - Step 2: Convert to fraction form
13,309,611.49/18,367,159.78 = 7,198,039.99/x - Step 3: Cross multiply
13,309,611.49x = 18,367,159.78 × 7,198,039.99 - Step 4: Simplify right side
13,309,611.49x = 132,207,550,651,364.19 - Step 5: Solve for x
x = 132,207,550,651,364.19/13,309,611.49 - Step 6: Final answer
x = 9,933,238.90
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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.