Finding the Fourth Proportional to 13,101,879.84, 18,081,939.58 and 7,876,579.64
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Solution
The fourth proportional to 13,101,879.84, 18,081,939.58 and 7,876,579.64 is: 10,870,488.73
Step by Step Solution
- Step 1: Write the proportion equation
13,101,879.84 : 18,081,939.58 = 7,876,579.64 : x - Step 2: Convert to fraction form
13,101,879.84/18,081,939.58 = 7,876,579.64/x - Step 3: Cross multiply
13,101,879.84x = 18,081,939.58 × 7,876,579.64 - Step 4: Simplify right side
13,101,879.84x = 142,423,837,147,538.12 - Step 5: Solve for x
x = 142,423,837,147,538.12/13,101,879.84 - Step 6: Final answer
x = 10,870,488.73
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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.