Finding the Fourth Proportional to 21,983,692.74, 30,336,910.65 and 12,690,949.20
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Solution
The fourth proportional to 21,983,692.74, 30,336,910.65 and 12,690,949.20 is: 17,513,171.99
Step by Step Solution
- Step 1: Write the proportion equation
21,983,692.74 : 30,336,910.65 = 12,690,949.20 : x - Step 2: Convert to fraction form
21,983,692.74/30,336,910.65 = 12,690,949.20/x - Step 3: Cross multiply
21,983,692.74x = 30,336,910.65 × 12,690,949.20 - Step 4: Simplify right side
21,983,692.74x = 385,004,191,944,088.94 - Step 5: Solve for x
x = 385,004,191,944,088.94/21,983,692.74 - Step 6: Final answer
x = 17,513,171.99
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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.