Finding the Fourth Proportional to 10,512,020.80, 15,768,031.20 and 8,244,539.20
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Solution
The fourth proportional to 10,512,020.80, 15,768,031.20 and 8,244,539.20 is: 12,366,808.80
Step by Step Solution
- Step 1: Write the proportion equation
10,512,020.80 : 15,768,031.20 = 8,244,539.20 : x - Step 2: Convert to fraction form
10,512,020.80/15,768,031.20 = 8,244,539.20/x - Step 3: Cross multiply
10,512,020.80x = 15,768,031.20 × 8,244,539.20 - Step 4: Simplify right side
10,512,020.80x = 130,000,151,335,223.03 - Step 5: Solve for x
x = 130,000,151,335,223.03/10,512,020.80 - Step 6: Final answer
x = 12,366,808.80
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1.5x scale
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.