Finding the Fourth Proportional to 21,555,268.26, 29,741,829.77 and 12,386,139.54
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Solution
The fourth proportional to 21,555,268.26, 29,741,829.77 and 12,386,139.54 is: 17,090,321.00
Step by Step Solution
- Step 1: Write the proportion equation
21,555,268.26 : 29,741,829.77 = 12,386,139.54 : x - Step 2: Convert to fraction form
21,555,268.26/29,741,829.77 = 12,386,139.54/x - Step 3: Cross multiply
21,555,268.26x = 29,741,829.77 × 12,386,139.54 - Step 4: Simplify right side
21,555,268.26x = 368,386,453,706,146.06 - Step 5: Solve for x
x = 368,386,453,706,146.06/21,555,268.26 - Step 6: Final answer
x = 17,090,321.00
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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.