Finding the Fourth Proportional to 19,659,053.87, 27,129,620.27 and 10,957,778.21
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Solution
The fourth proportional to 19,659,053.87, 27,129,620.27 and 10,957,778.21 is: 15,121,804.12
Step by Step Solution
- Step 1: Write the proportion equation
19,659,053.87 : 27,129,620.27 = 10,957,778.21 : x - Step 2: Convert to fraction form
19,659,053.87/27,129,620.27 = 10,957,778.21/x - Step 3: Cross multiply
19,659,053.87x = 27,129,620.27 × 10,957,778.21 - Step 4: Simplify right side
19,659,053.87x = 297,280,361,649,743.31 - Step 5: Solve for x
x = 297,280,361,649,743.31/19,659,053.87 - Step 6: Final answer
x = 15,121,804.12
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1.5x scale
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.