Finding the Fourth Proportional to 20,695,553.40, 31,043,330.10 and 19,136,659.80
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Solution
The fourth proportional to 20,695,553.40, 31,043,330.10 and 19,136,659.80 is: 28,704,989.70
Step by Step Solution
- Step 1: Write the proportion equation
20,695,553.40 : 31,043,330.10 = 19,136,659.80 : x - Step 2: Convert to fraction form
20,695,553.40/31,043,330.10 = 19,136,659.80/x - Step 3: Cross multiply
20,695,553.40x = 31,043,330.10 × 19,136,659.80 - Step 4: Simplify right side
20,695,553.40x = 594,065,647,182,800 - Step 5: Solve for x
x = 594,065,647,182,800/20,695,553.40 - Step 6: Final answer
x = 28,704,989.70
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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.