Finding the Fourth Proportional to 13,136,579.68, 18,128,519.30 and 7,335,573.12
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Solution
The fourth proportional to 13,136,579.68, 18,128,519.30 and 7,335,573.12 is: 10,123,112.87
Step by Step Solution
- Step 1: Write the proportion equation
13,136,579.68 : 18,128,519.30 = 7,335,573.12 : x - Step 2: Convert to fraction form
13,136,579.68/18,128,519.30 = 7,335,573.12/x - Step 3: Cross multiply
13,136,579.68x = 18,128,519.30 × 7,335,573.12 - Step 4: Simplify right side
13,136,579.68x = 132,983,078,882,481.22 - Step 5: Solve for x
x = 132,983,078,882,481.22/13,136,579.68 - Step 6: Final answer
x = 10,123,112.87
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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.