Finding the Fourth Proportional to 20,436,895.44, 28,192,362.12 and 12,698,997.84
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Solution
The fourth proportional to 20,436,895.44, 28,192,362.12 and 12,698,997.84 is: 17,518,059.27
Step by Step Solution
- Step 1: Write the proportion equation
20,436,895.44 : 28,192,362.12 = 12,698,997.84 : x - Step 2: Convert to fraction form
20,436,895.44/28,192,362.12 = 12,698,997.84/x - Step 3: Cross multiply
20,436,895.44x = 28,192,362.12 × 12,698,997.84 - Step 4: Simplify right side
20,436,895.44x = 358,014,745,666,377.81 - Step 5: Solve for x
x = 358,014,745,666,377.81/20,436,895.44 - Step 6: Final answer
x = 17,518,059.27
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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.