Finding the Fourth Proportional to 20,898,806.40, 28,837,739.84 and 11,605,112.96
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Solution
The fourth proportional to 20,898,806.40, 28,837,739.84 and 11,605,112.96 is: 16,013,604.89
Step by Step Solution
- Step 1: Write the proportion equation
20,898,806.40 : 28,837,739.84 = 11,605,112.96 : x - Step 2: Convert to fraction form
20,898,806.40/28,837,739.84 = 11,605,112.96/x - Step 3: Cross multiply
20,898,806.40x = 28,837,739.84 × 11,605,112.96 - Step 4: Simplify right side
20,898,806.40x = 334,665,228,354,292.38 - Step 5: Solve for x
x = 334,665,228,354,292.38/20,898,806.40 - Step 6: Final answer
x = 16,013,604.89
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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.