Finding the Fourth Proportional to 22,428,065.20, 33,642,097.80 and 18,442,257.70
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Solution
The fourth proportional to 22,428,065.20, 33,642,097.80 and 18,442,257.70 is: 27,663,386.55
Step by Step Solution
- Step 1: Write the proportion equation
22,428,065.20 : 33,642,097.80 = 18,442,257.70 : x - Step 2: Convert to fraction form
22,428,065.20/33,642,097.80 = 18,442,257.70/x - Step 3: Cross multiply
22,428,065.20x = 33,642,097.80 × 18,442,257.70 - Step 4: Simplify right side
22,428,065.20x = 620,436,237,196,203 - Step 5: Solve for x
x = 620,436,237,196,203/22,428,065.20 - Step 6: Final answer
x = 27,663,386.55
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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.