Finding the Fourth Proportional to 13,337,043.57, 18,405,138.80 and 7,225,472.07
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Solution
The fourth proportional to 13,337,043.57, 18,405,138.80 and 7,225,472.07 is: 9,971,161.57
Step by Step Solution
- Step 1: Write the proportion equation
13,337,043.57 : 18,405,138.80 = 7,225,472.07 : x - Step 2: Convert to fraction form
13,337,043.57/18,405,138.80 = 7,225,472.07/x - Step 3: Cross multiply
13,337,043.57x = 18,405,138.80 × 7,225,472.07 - Step 4: Simplify right side
13,337,043.57x = 132,985,816,361,936.98 - Step 5: Solve for x
x = 132,985,816,361,936.98/13,337,043.57 - Step 6: Final answer
x = 9,971,161.57
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1.5x scale
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.