Finding the Fourth Proportional to 20,736,117.20, 31,104,175.80 and 15,585,294.80
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Solution
The fourth proportional to 20,736,117.20, 31,104,175.80 and 15,585,294.80 is: 23,377,942.20
Step by Step Solution
- Step 1: Write the proportion equation
20,736,117.20 : 31,104,175.80 = 15,585,294.80 : x - Step 2: Convert to fraction form
20,736,117.20/31,104,175.80 = 15,585,294.80/x - Step 3: Cross multiply
20,736,117.20x = 31,104,175.80 × 15,585,294.80 - Step 4: Simplify right side
20,736,117.20x = 484,767,749,354,025.88 - Step 5: Solve for x
x = 484,767,749,354,025.88/20,736,117.20 - Step 6: Final answer
x = 23,377,942.20
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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.