Finding the Fourth Proportional to 19,274,734.20, 28,912,101.30 and 18,424,428.60
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Solution
The fourth proportional to 19,274,734.20, 28,912,101.30 and 18,424,428.60 is: 27,636,642.90
Step by Step Solution
- Step 1: Write the proportion equation
19,274,734.20 : 28,912,101.30 = 18,424,428.60 : x - Step 2: Convert to fraction form
19,274,734.20/28,912,101.30 = 18,424,428.60/x - Step 3: Cross multiply
19,274,734.20x = 28,912,101.30 × 18,424,428.60 - Step 4: Simplify right side
19,274,734.20x = 532,688,946,077,817.25 - Step 5: Solve for x
x = 532,688,946,077,817.25/19,274,734.20 - Step 6: Final answer
x = 27,636,642.90
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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.