Finding the Fourth Proportional to 20,663,673.22, 28,516,131.36 and 11,372,313.08
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Solution
The fourth proportional to 20,663,673.22, 28,516,131.36 and 11,372,313.08 is: 15,693,936.42
Step by Step Solution
- Step 1: Write the proportion equation
20,663,673.22 : 28,516,131.36 = 11,372,313.08 : x - Step 2: Convert to fraction form
20,663,673.22/28,516,131.36 = 11,372,313.08/x - Step 3: Cross multiply
20,663,673.22x = 28,516,131.36 × 11,372,313.08 - Step 4: Simplify right side
20,663,673.22x = 324,294,373,656,326.19 - Step 5: Solve for x
x = 324,294,373,656,326.19/20,663,673.22 - Step 6: Final answer
x = 15,693,936.42
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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.