Finding the Fourth Proportional to 20,427,894.75, 28,190,265.17 and 11,135,261.33
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Solution
The fourth proportional to 20,427,894.75, 28,190,265.17 and 11,135,261.33 is: 15,366,535.48
Step by Step Solution
- Step 1: Write the proportion equation
20,427,894.75 : 28,190,265.17 = 11,135,261.33 : x - Step 2: Convert to fraction form
20,427,894.75/28,190,265.17 = 11,135,261.33/x - Step 3: Cross multiply
20,427,894.75x = 28,190,265.17 × 11,135,261.33 - Step 4: Simplify right side
20,427,894.75x = 313,905,969,433,319.19 - Step 5: Solve for x
x = 313,905,969,433,319.19/20,427,894.75 - Step 6: Final answer
x = 15,366,535.48
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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.