Finding the Fourth Proportional to 13,121,189.73, 18,107,249.61 and 7,319,971.46
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Solution
The fourth proportional to 13,121,189.73, 18,107,249.61 and 7,319,971.46 is: 10,101,564.95
Step by Step Solution
- Step 1: Write the proportion equation
13,121,189.73 : 18,107,249.61 = 7,319,971.46 : x - Step 2: Convert to fraction form
13,121,189.73/18,107,249.61 = 7,319,971.46/x - Step 3: Cross multiply
13,121,189.73x = 18,107,249.61 × 7,319,971.46 - Step 4: Simplify right side
13,121,189.73x = 132,544,550,273,759.88 - Step 5: Solve for x
x = 132,544,550,273,759.88/13,121,189.73 - Step 6: Final answer
x = 10,101,564.95
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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.