Finding the Fourth Proportional to 18,263,836.52, 25,205,512.74 and 10,115,832.68
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Solution
The fourth proportional to 18,263,836.52, 25,205,512.74 and 10,115,832.68 is: 13,960,634.68
Step by Step Solution
- Step 1: Write the proportion equation
18,263,836.52 : 25,205,512.74 = 10,115,832.68 : x - Step 2: Convert to fraction form
18,263,836.52/25,205,512.74 = 10,115,832.68/x - Step 3: Cross multiply
18,263,836.52x = 25,205,512.74 × 10,115,832.68 - Step 4: Simplify right side
18,263,836.52x = 254,974,749,491,448.31 - Step 5: Solve for x
x = 254,974,749,491,448.31/18,263,836.52 - Step 6: Final answer
x = 13,960,634.68
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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.