Finding the Fourth Proportional to 19,739,785.80, 29,609,678.70 and 10,173,847.80
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Solution
The fourth proportional to 19,739,785.80, 29,609,678.70 and 10,173,847.80 is: 15,260,771.70
Step by Step Solution
- Step 1: Write the proportion equation
19,739,785.80 : 29,609,678.70 = 10,173,847.80 : x - Step 2: Convert to fraction form
19,739,785.80/29,609,678.70 = 10,173,847.80/x - Step 3: Cross multiply
19,739,785.80x = 29,609,678.70 × 10,173,847.80 - Step 4: Simplify right side
19,739,785.80x = 301,244,364,500,701.88 - Step 5: Solve for x
x = 301,244,364,500,701.88/19,739,785.80 - Step 6: Final answer
x = 15,260,771.70
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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.