Finding the Fourth Proportional to 20,386,765.58, 30,590,810.01 and 8,257,510.49
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Solution
The fourth proportional to 20,386,765.58, 30,590,810.01 and 8,257,510.49 is: 12,390,584.15
Step by Step Solution
- Step 1: Write the proportion equation
20,386,765.58 : 30,590,810.01 = 8,257,510.49 : x - Step 2: Convert to fraction form
20,386,765.58/30,590,810.01 = 8,257,510.49/x - Step 3: Cross multiply
20,386,765.58x = 30,590,810.01 × 8,257,510.49 - Step 4: Simplify right side
20,386,765.58x = 252,603,934,402,217.97 - Step 5: Solve for x
x = 252,603,934,402,217.97/20,386,765.58 - Step 6: Final answer
x = 12,390,584.15
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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.