Finding the Fourth Proportional to 20,348,420.99, 28,080,814.52 and 11,181,654.23
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Solution
The fourth proportional to 20,348,420.99, 28,080,814.52 and 11,181,654.23 is: 15,430,679.29
Step by Step Solution
- Step 1: Write the proportion equation
20,348,420.99 : 28,080,814.52 = 11,181,654.23 : x - Step 2: Convert to fraction form
20,348,420.99/28,080,814.52 = 11,181,654.23/x - Step 3: Cross multiply
20,348,420.99x = 28,080,814.52 × 11,181,654.23 - Step 4: Simplify right side
20,348,420.99x = 313,989,958,263,091.06 - Step 5: Solve for x
x = 313,989,958,263,091.06/20,348,420.99 - Step 6: Final answer
x = 15,430,679.29
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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.