Finding the Fourth Proportional to 13,121,194.48, 18,107,256.17 and 7,319,976.21
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Solution
The fourth proportional to 13,121,194.48, 18,107,256.17 and 7,319,976.21 is: 10,101,571.51
Step by Step Solution
- Step 1: Write the proportion equation
13,121,194.48 : 18,107,256.17 = 7,319,976.21 : x - Step 2: Convert to fraction form
13,121,194.48/18,107,256.17 = 7,319,976.21/x - Step 3: Cross multiply
13,121,194.48x = 18,107,256.17 × 7,319,976.21 - Step 4: Simplify right side
13,121,194.48x = 132,544,684,392,775.73 - Step 5: Solve for x
x = 132,544,684,392,775.73/13,121,194.48 - Step 6: Final answer
x = 10,101,571.51
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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.