Finding the Fourth Proportional to 21,297,164.97, 29,439,735.33 and 18,996,855.60
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Solution
The fourth proportional to 21,297,164.97, 29,439,735.33 and 18,996,855.60 is: 26,259,945.95
Step by Step Solution
- Step 1: Write the proportion equation
21,297,164.97 : 29,439,735.33 = 18,996,855.60 : x - Step 2: Convert to fraction form
21,297,164.97/29,439,735.33 = 18,996,855.60/x - Step 3: Cross multiply
21,297,164.97x = 29,439,735.33 × 18,996,855.60 - Step 4: Simplify right side
21,297,164.97x = 559,262,400,966,228.38 - Step 5: Solve for x
x = 559,262,400,966,228.38/21,297,164.97 - Step 6: Final answer
x = 26,259,945.95
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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.