Finding the Fourth Proportional to 21,084.84, 29,098.35 and 12,132.09
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Solution
The fourth proportional to 21,084.84, 29,098.35 and 12,132.09 is: 16,743.02
Step by Step Solution
- Step 1: Write the proportion equation
21,084.84 : 29,098.35 = 12,132.09 : x - Step 2: Convert to fraction form
21,084.84/29,098.35 = 12,132.09/x - Step 3: Cross multiply
21,084.84x = 29,098.35 × 12,132.09 - Step 4: Simplify right side
21,084.84x = 353,023,801.05 - Step 5: Solve for x
x = 353,023,801.05/21,084.84 - Step 6: Final answer
x = 16,743.02
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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.