Finding the Fourth Proportional to 11,739,207.80, 17,608,811.70 and 8,151,981.05
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Solution
The fourth proportional to 11,739,207.80, 17,608,811.70 and 8,151,981.05 is: 12,227,971.58
Step by Step Solution
- Step 1: Write the proportion equation
11,739,207.80 : 17,608,811.70 = 8,151,981.05 : x - Step 2: Convert to fraction form
11,739,207.80/17,608,811.70 = 8,151,981.05/x - Step 3: Cross multiply
11,739,207.80x = 17,608,811.70 × 8,151,981.05 - Step 4: Simplify right side
11,739,207.80x = 143,546,699,291,418.28 - Step 5: Solve for x
x = 143,546,699,291,418.28/11,739,207.80 - Step 6: Final answer
x = 12,227,971.58
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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.