Finding the Fourth Proportional to 13,590,709.76, 18,755,182.16 and 7,479,138.28
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Solution
The fourth proportional to 13,590,709.76, 18,755,182.16 and 7,479,138.28 is: 10,321,212.31
Step by Step Solution
- Step 1: Write the proportion equation
13,590,709.76 : 18,755,182.16 = 7,479,138.28 : x - Step 2: Convert to fraction form
13,590,709.76/18,755,182.16 = 7,479,138.28/x - Step 3: Cross multiply
13,590,709.76x = 18,755,182.16 × 7,479,138.28 - Step 4: Simplify right side
13,590,709.76x = 140,272,600,841,229.09 - Step 5: Solve for x
x = 140,272,600,841,229.09/13,590,709.76 - Step 6: Final answer
x = 10,321,212.31
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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.