Finding the Fourth Proportional to 20,282,555.40, 27,989,950.68 and 10,990,118.76
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Solution
The fourth proportional to 20,282,555.40, 27,989,950.68 and 10,990,118.76 is: 15,166,377.02
Step by Step Solution
- Step 1: Write the proportion equation
20,282,555.40 : 27,989,950.68 = 10,990,118.76 : x - Step 2: Convert to fraction form
20,282,555.40/27,989,950.68 = 10,990,118.76/x - Step 3: Cross multiply
20,282,555.40x = 27,989,950.68 × 10,990,118.76 - Step 4: Simplify right side
20,282,555.40x = 307,612,882,059,742.75 - Step 5: Solve for x
x = 307,612,882,059,742.75/20,282,555.40 - Step 6: Final answer
x = 15,166,377.02
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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.