Finding the Fourth Proportional to 14,879,621.40, 20,532,743.80 and 8,351,989.68
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Solution
The fourth proportional to 14,879,621.40, 20,532,743.80 and 8,351,989.68 is: 11,525,109.40
Step by Step Solution
- Step 1: Write the proportion equation
14,879,621.40 : 20,532,743.80 = 8,351,989.68 : x - Step 2: Convert to fraction form
14,879,621.40/20,532,743.80 = 8,351,989.68/x - Step 3: Cross multiply
14,879,621.40x = 20,532,743.80 × 8,351,989.68 - Step 4: Simplify right side
14,879,621.40x = 171,489,264,375,801.78 - Step 5: Solve for x
x = 171,489,264,375,801.78/14,879,621.40 - Step 6: Final answer
x = 11,525,109.40
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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.