Finding the Fourth Proportional to 11,236,873.49, 15,517,364.15 and 8,270,685.28
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Solution
The fourth proportional to 11,236,873.49, 15,517,364.15 and 8,270,685.28 is: 11,421,258.36
Step by Step Solution
- Step 1: Write the proportion equation
11,236,873.49 : 15,517,364.15 = 8,270,685.28 : x - Step 2: Convert to fraction form
11,236,873.49/15,517,364.15 = 8,270,685.28/x - Step 3: Cross multiply
11,236,873.49x = 15,517,364.15 × 8,270,685.28 - Step 4: Simplify right side
11,236,873.49x = 128,339,235,259,804.72 - Step 5: Solve for x
x = 128,339,235,259,804.72/11,236,873.49 - Step 6: Final answer
x = 11,421,258.36
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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.