Finding the Fourth Proportional to 18,969,947.64, 28,459,448.28 and 6,190,476.12
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Solution
The fourth proportional to 18,969,947.64, 28,459,448.28 and 6,190,476.12 is: 9,287,191.42
Step by Step Solution
- Step 1: Write the proportion equation
18,969,947.64 : 28,459,448.28 = 6,190,476.12 : x - Step 2: Convert to fraction form
18,969,947.64/28,459,448.28 = 6,190,476.12/x - Step 3: Cross multiply
18,969,947.64x = 28,459,448.28 × 6,190,476.12 - Step 4: Simplify right side
18,969,947.64x = 176,177,534,965,715.09 - Step 5: Solve for x
x = 176,177,534,965,715.09/18,969,947.64 - Step 6: Final answer
x = 9,287,191.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.