Finding the Fourth Proportional to 18,453,021.70, 27,679,532.55 and 7,666,737.70
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Solution
The fourth proportional to 18,453,021.70, 27,679,532.55 and 7,666,737.70 is: 11,500,106.55
Step by Step Solution
- Step 1: Write the proportion equation
18,453,021.70 : 27,679,532.55 = 7,666,737.70 : x - Step 2: Convert to fraction form
18,453,021.70/27,679,532.55 = 7,666,737.70/x - Step 3: Cross multiply
18,453,021.70x = 27,679,532.55 × 7,666,737.70 - Step 4: Simplify right side
18,453,021.70x = 212,211,715,719,462.16 - Step 5: Solve for x
x = 212,211,715,719,462.16/18,453,021.70 - Step 6: Final answer
x = 11,500,106.55
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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.