Finding the Fourth Proportional to 13,438,328.49, 18,544,359.21 and 7,933,476.62
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Solution
The fourth proportional to 13,438,328.49, 18,544,359.21 and 7,933,476.62 is: 10,947,882.42
Step by Step Solution
- Step 1: Write the proportion equation
13,438,328.49 : 18,544,359.21 = 7,933,476.62 : x - Step 2: Convert to fraction form
13,438,328.49/18,544,359.21 = 7,933,476.62/x - Step 3: Cross multiply
13,438,328.49x = 18,544,359.21 × 7,933,476.62 - Step 4: Simplify right side
13,438,328.49x = 147,121,240,306,252.09 - Step 5: Solve for x
x = 147,121,240,306,252.09/13,438,328.49 - Step 6: Final answer
x = 10,947,882.42
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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.