Finding the Fourth Proportional to 10,345,117.10, 15,491,103.60 and 8,201,638.40
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Solution
The fourth proportional to 10,345,117.10, 15,491,103.60 and 8,201,638.40 is: 12,281,391.20
Step by Step Solution
- Step 1: Write the proportion equation
10,345,117.10 : 15,491,103.60 = 8,201,638.40 : x - Step 2: Convert to fraction form
10,345,117.10/15,491,103.60 = 8,201,638.40/x - Step 3: Cross multiply
10,345,117.10x = 15,491,103.60 × 8,201,638.40 - Step 4: Simplify right side
10,345,117.10x = 127,052,430,144,138.25 - Step 5: Solve for x
x = 127,052,430,144,138.25/10,345,117.10 - Step 6: Final answer
x = 12,281,391.20
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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.