Finding the Fourth Proportional to 21,027,804.36, 29,018,747.90 and 12,332,248.62
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Solution
The fourth proportional to 21,027,804.36, 29,018,747.90 and 12,332,248.62 is: 17,018,724.71
Step by Step Solution
- Step 1: Write the proportion equation
21,027,804.36 : 29,018,747.90 = 12,332,248.62 : x - Step 2: Convert to fraction form
21,027,804.36/29,018,747.90 = 12,332,248.62/x - Step 3: Cross multiply
21,027,804.36x = 29,018,747.90 × 12,332,248.62 - Step 4: Simplify right side
21,027,804.36x = 357,866,413,743,902.88 - Step 5: Solve for x
x = 357,866,413,743,902.88/21,027,804.36 - Step 6: Final answer
x = 17,018,724.71
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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.