Finding the Fourth Proportional to 13,551,121.26, 20,308,740.12 and 9,939,979.80
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Solution
The fourth proportional to 13,551,121.26, 20,308,740.12 and 9,939,979.80 is: 14,896,809.10
Step by Step Solution
- Step 1: Write the proportion equation
13,551,121.26 : 20,308,740.12 = 9,939,979.80 : x - Step 2: Convert to fraction form
13,551,121.26/20,308,740.12 = 9,939,979.80/x - Step 3: Cross multiply
13,551,121.26x = 20,308,740.12 × 9,939,979.80 - Step 4: Simplify right side
13,551,121.26x = 201,868,466,556,249.59 - Step 5: Solve for x
x = 201,868,466,556,249.59/13,551,121.26 - Step 6: Final answer
x = 14,896,809.10
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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.