Finding the Fourth Proportional to 13,627,138.64, 18,806,581.80 and 7,827,039.68
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Solution
The fourth proportional to 13,627,138.64, 18,806,581.80 and 7,827,039.68 is: 10,801,964.07
Step by Step Solution
- Step 1: Write the proportion equation
13,627,138.64 : 18,806,581.80 = 7,827,039.68 : x - Step 2: Convert to fraction form
13,627,138.64/18,806,581.80 = 7,827,039.68/x - Step 3: Cross multiply
13,627,138.64x = 18,806,581.80 × 7,827,039.68 - Step 4: Simplify right side
13,627,138.64x = 147,199,861,993,765.81 - Step 5: Solve for x
x = 147,199,861,993,765.81/13,627,138.64 - Step 6: Final answer
x = 10,801,964.07
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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.