Finding the Fourth Proportional to 21,211,692.08, 29,271,311.16 and 12,965,561.24
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Solution
The fourth proportional to 21,211,692.08, 29,271,311.16 and 12,965,561.24 is: 17,891,970.90
Step by Step Solution
- Step 1: Write the proportion equation
21,211,692.08 : 29,271,311.16 = 12,965,561.24 : x - Step 2: Convert to fraction form
21,211,692.08/29,271,311.16 = 12,965,561.24/x - Step 3: Cross multiply
21,211,692.08x = 29,271,311.16 × 12,965,561.24 - Step 4: Simplify right side
21,211,692.08x = 379,518,977,420,075.44 - Step 5: Solve for x
x = 379,518,977,420,075.44/21,211,692.08 - Step 6: Final answer
x = 17,891,970.90
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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.