Finding the Fourth Proportional to 13,469,858.05, 18,588,420.93 and 7,668,639.67
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Solution
The fourth proportional to 13,469,858.05, 18,588,420.93 and 7,668,639.67 is: 10,582,732.32
Step by Step Solution
- Step 1: Write the proportion equation
13,469,858.05 : 18,588,420.93 = 7,668,639.67 : x - Step 2: Convert to fraction form
13,469,858.05/18,588,420.93 = 7,668,639.67/x - Step 3: Cross multiply
13,469,858.05x = 18,588,420.93 × 7,668,639.67 - Step 4: Simplify right side
13,469,858.05x = 142,547,902,146,456.28 - Step 5: Solve for x
x = 142,547,902,146,456.28/13,469,858.05 - Step 6: Final answer
x = 10,582,732.32
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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.