Finding the Fourth Proportional to 20,454,912.24, 28,228,378.46 and 11,163,079.74
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Solution
The fourth proportional to 20,454,912.24, 28,228,378.46 and 11,163,079.74 is: 15,405,377.25
Step by Step Solution
- Step 1: Write the proportion equation
20,454,912.24 : 28,228,378.46 = 11,163,079.74 : x - Step 2: Convert to fraction form
20,454,912.24/28,228,378.46 = 11,163,079.74/x - Step 3: Cross multiply
20,454,912.24x = 28,228,378.46 × 11,163,079.74 - Step 4: Simplify right side
20,454,912.24x = 315,115,639,679,878.44 - Step 5: Solve for x
x = 315,115,639,679,878.44/20,454,912.24 - Step 6: Final answer
x = 15,405,377.25
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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.