Finding the Fourth Proportional to 19,421,998.20, 29,132,997.30 and 6,642,919.80
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Solution
The fourth proportional to 19,421,998.20, 29,132,997.30 and 6,642,919.80 is: 9,964,379.70
Step by Step Solution
- Step 1: Write the proportion equation
19,421,998.20 : 29,132,997.30 = 6,642,919.80 : x - Step 2: Convert to fraction form
19,421,998.20/29,132,997.30 = 6,642,919.80/x - Step 3: Cross multiply
19,421,998.20x = 29,132,997.30 × 6,642,919.80 - Step 4: Simplify right side
19,421,998.20x = 193,528,164,597,516.53 - Step 5: Solve for x
x = 193,528,164,597,516.53/19,421,998.20 - Step 6: Final answer
x = 9,964,379.70
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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.