Finding the Fourth Proportional to 19,943,841.40, 29,939,381.70 and 11,314,814.20
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Solution
The fourth proportional to 19,943,841.40, 29,939,381.70 and 11,314,814.20 is: 16,985,621.50
Step by Step Solution
- Step 1: Write the proportion equation
19,943,841.40 : 29,939,381.70 = 11,314,814.20 : x - Step 2: Convert to fraction form
19,943,841.40/29,939,381.70 = 11,314,814.20/x - Step 3: Cross multiply
19,943,841.40x = 29,939,381.70 × 11,314,814.20 - Step 4: Simplify right side
19,943,841.40x = 338,758,541,198,380.12 - Step 5: Solve for x
x = 338,758,541,198,380.12/19,943,841.40 - Step 6: Final answer
x = 16,985,621.50
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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.