Finding the Fourth Proportional to 13,434,405.66, 18,540,127.07 and 7,555,880.88
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Solution
The fourth proportional to 13,434,405.66, 18,540,127.07 and 7,555,880.88 is: 10,427,479.65
Step by Step Solution
- Step 1: Write the proportion equation
13,434,405.66 : 18,540,127.07 = 7,555,880.88 : x - Step 2: Convert to fraction form
13,434,405.66/18,540,127.07 = 7,555,880.88/x - Step 3: Cross multiply
13,434,405.66x = 18,540,127.07 × 7,555,880.88 - Step 4: Simplify right side
13,434,405.66x = 140,086,991,603,204.03 - Step 5: Solve for x
x = 140,086,991,603,204.03/13,434,405.66 - Step 6: Final answer
x = 10,427,479.65
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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.