Finding the Fourth Proportional to 25,210,906.70, 34,790,578.76 and 15,420,631.70
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Solution
The fourth proportional to 25,210,906.70, 34,790,578.76 and 15,420,631.70 is: 21,280,182.75
Step by Step Solution
- Step 1: Write the proportion equation
25,210,906.70 : 34,790,578.76 = 15,420,631.70 : x - Step 2: Convert to fraction form
25,210,906.70/34,790,578.76 = 15,420,631.70/x - Step 3: Cross multiply
25,210,906.70x = 34,790,578.76 × 15,420,631.70 - Step 4: Simplify right side
25,210,906.70x = 536,492,701,813,330.81 - Step 5: Solve for x
x = 536,492,701,813,330.81/25,210,906.70 - Step 6: Final answer
x = 21,280,182.75
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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.