Finding the Fourth Proportional to 19,920,984.75, 29,858,810.19 and 12,122,699.61
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Solution
The fourth proportional to 19,920,984.75, 29,858,810.19 and 12,122,699.61 is: 18,170,255.70
Step by Step Solution
- Step 1: Write the proportion equation
19,920,984.75 : 29,858,810.19 = 12,122,699.61 : x - Step 2: Convert to fraction form
19,920,984.75/29,858,810.19 = 12,122,699.61/x - Step 3: Cross multiply
19,920,984.75x = 29,858,810.19 × 12,122,699.61 - Step 4: Simplify right side
19,920,984.75x = 361,969,386,645,377 - Step 5: Solve for x
x = 361,969,386,645,377/19,920,984.75 - Step 6: Final answer
x = 18,170,255.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.