Finding the Fourth Proportional to 10,128,213.90, 15,192,345.57 and 2,555,179.74
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Solution
The fourth proportional to 10,128,213.90, 15,192,345.57 and 2,555,179.74 is: 3,832,775.85
Step by Step Solution
- Step 1: Write the proportion equation
10,128,213.90 : 15,192,345.57 = 2,555,179.74 : x - Step 2: Convert to fraction form
10,128,213.90/15,192,345.57 = 2,555,179.74/x - Step 3: Cross multiply
10,128,213.90x = 15,192,345.57 × 2,555,179.74 - Step 4: Simplify right side
10,128,213.90x = 38,819,173,603,542.76 - Step 5: Solve for x
x = 38,819,173,603,542.76/10,128,213.90 - Step 6: Final answer
x = 3,832,775.85
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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.