Finding the Fourth Proportional to 20,372,995.57, 28,106,437.09 and 11,550,588.97
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Solution
The fourth proportional to 20,372,995.57, 28,106,437.09 and 11,550,588.97 is: 15,935,108.86
Step by Step Solution
- Step 1: Write the proportion equation
20,372,995.57 : 28,106,437.09 = 11,550,588.97 : x - Step 2: Convert to fraction form
20,372,995.57/28,106,437.09 = 11,550,588.97/x - Step 3: Cross multiply
20,372,995.57x = 28,106,437.09 × 11,550,588.97 - Step 4: Simplify right side
20,372,995.57x = 324,645,902,237,752.94 - Step 5: Solve for x
x = 324,645,902,237,752.94/20,372,995.57 - Step 6: Final answer
x = 15,935,108.86
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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.