Finding the Fourth Proportional to 19,920,949.68, 27,492,956.19 and 11,976,064.15
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Solution
The fourth proportional to 19,920,949.68, 27,492,956.19 and 11,976,064.15 is: 16,528,198.32
Step by Step Solution
- Step 1: Write the proportion equation
19,920,949.68 : 27,492,956.19 = 11,976,064.15 : x - Step 2: Convert to fraction form
19,920,949.68/27,492,956.19 = 11,976,064.15/x - Step 3: Cross multiply
19,920,949.68x = 27,492,956.19 × 11,976,064.15 - Step 4: Simplify right side
19,920,949.68x = 329,257,406,987,396.50 - Step 5: Solve for x
x = 329,257,406,987,396.50/19,920,949.68 - Step 6: Final answer
x = 16,528,198.32
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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.