Finding the Fourth Proportional to 20,199,408.30, 30,299,112.45 and 19,880,543.70
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Solution
The fourth proportional to 20,199,408.30, 30,299,112.45 and 19,880,543.70 is: 29,820,815.55
Step by Step Solution
- Step 1: Write the proportion equation
20,199,408.30 : 30,299,112.45 = 19,880,543.70 : x - Step 2: Convert to fraction form
20,199,408.30/30,299,112.45 = 19,880,543.70/x - Step 3: Cross multiply
20,199,408.30x = 30,299,112.45 × 19,880,543.70 - Step 4: Simplify right side
20,199,408.30x = 602,362,829,133,439 - Step 5: Solve for x
x = 602,362,829,133,439/20,199,408.30 - Step 6: Final answer
x = 29,820,815.55
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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.