Finding the Fourth Proportional to 19,431,256.80, 29,146,885.20 and 8,065,855.20
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Solution
The fourth proportional to 19,431,256.80, 29,146,885.20 and 8,065,855.20 is: 12,098,782.80
Step by Step Solution
- Step 1: Write the proportion equation
19,431,256.80 : 29,146,885.20 = 8,065,855.20 : x - Step 2: Convert to fraction form
19,431,256.80/29,146,885.20 = 8,065,855.20/x - Step 3: Cross multiply
19,431,256.80x = 29,146,885.20 × 8,065,855.20 - Step 4: Simplify right side
19,431,256.80x = 235,094,555,554,223.03 - Step 5: Solve for x
x = 235,094,555,554,223.03/19,431,256.80 - Step 6: Final answer
x = 12,098,782.80
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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.