Finding the Fourth Proportional to 19,998,919.20, 27,598,421.20 and 11,178,358.88
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Solution
The fourth proportional to 19,998,919.20, 27,598,421.20 and 11,178,358.88 is: 15,426,086.46
Step by Step Solution
- Step 1: Write the proportion equation
19,998,919.20 : 27,598,421.20 = 11,178,358.88 : x - Step 2: Convert to fraction form
19,998,919.20/27,598,421.20 = 11,178,358.88/x - Step 3: Cross multiply
19,998,919.20x = 27,598,421.20 × 11,178,358.88 - Step 4: Simplify right side
19,998,919.20x = 308,505,056,695,000.25 - Step 5: Solve for x
x = 308,505,056,695,000.25/19,998,919.20 - Step 6: Final answer
x = 15,426,086.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.