Finding the Fourth Proportional to 21,660,943.62, 29,874,883.41 and 18,408,524.70
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Solution
The fourth proportional to 21,660,943.62, 29,874,883.41 and 18,408,524.70 is: 25,389,130.72
Step by Step Solution
- Step 1: Write the proportion equation
21,660,943.62 : 29,874,883.41 = 18,408,524.70 : x - Step 2: Convert to fraction form
21,660,943.62/29,874,883.41 = 18,408,524.70/x - Step 3: Cross multiply
21,660,943.62x = 29,874,883.41 × 18,408,524.70 - Step 4: Simplify right side
21,660,943.62x = 549,952,529,162,605.19 - Step 5: Solve for x
x = 549,952,529,162,605.19/21,660,943.62 - Step 6: Final answer
x = 25,389,130.72
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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.