Finding the Fourth Proportional to 20,221,405.70, 30,269,122.95 and 14,552,701.70
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Solution
The fourth proportional to 20,221,405.70, 30,269,122.95 and 14,552,701.70 is: 21,783,723.82
Step by Step Solution
- Step 1: Write the proportion equation
20,221,405.70 : 30,269,122.95 = 14,552,701.70 : x - Step 2: Convert to fraction form
20,221,405.70/30,269,122.95 = 14,552,701.70/x - Step 3: Cross multiply
20,221,405.70x = 30,269,122.95 × 14,552,701.70 - Step 4: Simplify right side
20,221,405.70x = 440,497,517,011,974 - Step 5: Solve for x
x = 440,497,517,011,974/20,221,405.70 - Step 6: Final answer
x = 21,783,723.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.