Finding the Fourth Proportional to 20,292,795.36, 28,003,314.48 and 11,125,236.96
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Solution
The fourth proportional to 20,292,795.36, 28,003,314.48 and 11,125,236.96 is: 15,352,419.60
Step by Step Solution
- Step 1: Write the proportion equation
20,292,795.36 : 28,003,314.48 = 11,125,236.96 : x - Step 2: Convert to fraction form
20,292,795.36/28,003,314.48 = 11,125,236.96/x - Step 3: Cross multiply
20,292,795.36x = 28,003,314.48 × 11,125,236.96 - Step 4: Simplify right side
20,292,795.36x = 311,543,509,255,399.19 - Step 5: Solve for x
x = 311,543,509,255,399.19/20,292,795.36 - Step 6: Final answer
x = 15,352,419.60
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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.