Finding the Fourth Proportional to 18,090,680.40, 27,127,726.20 and 7,988,101.20
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Solution
The fourth proportional to 18,090,680.40, 27,127,726.20 and 7,988,101.20 is: 11,978,489.33
Step by Step Solution
- Step 1: Write the proportion equation
18,090,680.40 : 27,127,726.20 = 7,988,101.20 : x - Step 2: Convert to fraction form
18,090,680.40/27,127,726.20 = 7,988,101.20/x - Step 3: Cross multiply
18,090,680.40x = 27,127,726.20 × 7,988,101.20 - Step 4: Simplify right side
18,090,680.40x = 216,699,022,211,491.44 - Step 5: Solve for x
x = 216,699,022,211,491.44/18,090,680.40 - Step 6: Final answer
x = 11,978,489.33
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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.