Finding the Fourth Proportional to 13,419,311.70, 20,128,967.55 and 6,228,455.70
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Solution
The fourth proportional to 13,419,311.70, 20,128,967.55 and 6,228,455.70 is: 9,342,683.55
Step by Step Solution
- Step 1: Write the proportion equation
13,419,311.70 : 20,128,967.55 = 6,228,455.70 : x - Step 2: Convert to fraction form
13,419,311.70/20,128,967.55 = 6,228,455.70/x - Step 3: Cross multiply
13,419,311.70x = 20,128,967.55 × 6,228,455.70 - Step 4: Simplify right side
13,419,311.70x = 125,372,382,671,912.55 - Step 5: Solve for x
x = 125,372,382,671,912.55/13,419,311.70 - Step 6: Final answer
x = 9,342,683.55
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1.5x scale
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.