Finding the Fourth Proportional to 13,771,239.40, 20,657,636.70 and 4,186,930.60
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Solution
The fourth proportional to 13,771,239.40, 20,657,636.70 and 4,186,930.60 is: 6,280,632.32
Step by Step Solution
- Step 1: Write the proportion equation
13,771,239.40 : 20,657,636.70 = 4,186,930.60 : x - Step 2: Convert to fraction form
13,771,239.40/20,657,636.70 = 4,186,930.60/x - Step 3: Cross multiply
13,771,239.40x = 20,657,636.70 × 4,186,930.60 - Step 4: Simplify right side
13,771,239.40x = 86,492,091,222,913.02 - Step 5: Solve for x
x = 86,492,091,222,913.02/13,771,239.40 - Step 6: Final answer
x = 6,280,632.32
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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.