Finding the Fourth Proportional to 20,571,627.36, 28,389,230.64 and 11,278,581.60
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Solution
The fourth proportional to 20,571,627.36, 28,389,230.64 and 11,278,581.60 is: 15,564,653.62
Step by Step Solution
- Step 1: Write the proportion equation
20,571,627.36 : 28,389,230.64 = 11,278,581.60 : x - Step 2: Convert to fraction form
20,571,627.36/28,389,230.64 = 11,278,581.60/x - Step 3: Cross multiply
20,571,627.36x = 28,389,230.64 × 11,278,581.60 - Step 4: Simplify right side
20,571,627.36x = 320,190,254,334,460.25 - Step 5: Solve for x
x = 320,190,254,334,460.25/20,571,627.36 - Step 6: Final answer
x = 15,564,653.62
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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.