Finding the Fourth Proportional to 21,211,786.98, 29,271,442.02 and 12,965,656.10
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Solution
The fourth proportional to 21,211,786.98, 29,271,442.02 and 12,965,656.10 is: 17,892,101.74
Step by Step Solution
- Step 1: Write the proportion equation
21,211,786.98 : 29,271,442.02 = 12,965,656.10 : x - Step 2: Convert to fraction form
21,211,786.98/29,271,442.02 = 12,965,656.10/x - Step 3: Cross multiply
21,211,786.98x = 29,271,442.02 × 12,965,656.10 - Step 4: Simplify right side
21,211,786.98x = 379,523,450,636,052.12 - Step 5: Solve for x
x = 379,523,450,636,052.12/21,211,786.98 - Step 6: Final answer
x = 17,892,101.74
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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.