Finding the Fourth Proportional to 13,378,495.59, 18,444,755.79 and 9,654,201.09
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Solution
The fourth proportional to 13,378,495.59, 18,444,755.79 and 9,654,201.09 is: 13,310,119.98
Step by Step Solution
- Step 1: Write the proportion equation
13,378,495.59 : 18,444,755.79 = 9,654,201.09 : x - Step 2: Convert to fraction form
13,378,495.59/18,444,755.79 = 9,654,201.09/x - Step 3: Cross multiply
13,378,495.59x = 18,444,755.79 × 9,654,201.09 - Step 4: Simplify right side
13,378,495.59x = 178,069,381,452,601.81 - Step 5: Solve for x
x = 178,069,381,452,601.81/13,378,495.59 - Step 6: Final answer
x = 13,310,119.98
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1.5x scale
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.