Finding the Fourth Proportional to 12,221,138.35, 18,345,704.33 and 7,175,291.95
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Solution
The fourth proportional to 12,221,138.35, 18,345,704.33 and 7,175,291.95 is: 10,771,155.75
Step by Step Solution
- Step 1: Write the proportion equation
12,221,138.35 : 18,345,704.33 = 7,175,291.95 : x - Step 2: Convert to fraction form
12,221,138.35/18,345,704.33 = 7,175,291.95/x - Step 3: Cross multiply
12,221,138.35x = 18,345,704.33 × 7,175,291.95 - Step 4: Simplify right side
12,221,138.35x = 131,635,784,560,252.69 - Step 5: Solve for x
x = 131,635,784,560,252.69/12,221,138.35 - Step 6: Final answer
x = 10,771,155.75
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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.