Finding the Fourth Proportional to 18,213,822.40, 27,331,231.20 and 6,862,417.60
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Solution
The fourth proportional to 18,213,822.40, 27,331,231.20 and 6,862,417.60 is: 10,297,581.58
Step by Step Solution
- Step 1: Write the proportion equation
18,213,822.40 : 27,331,231.20 = 6,862,417.60 : x - Step 2: Convert to fraction form
18,213,822.40/27,331,231.20 = 6,862,417.60/x - Step 3: Cross multiply
18,213,822.40x = 27,331,231.20 × 6,862,417.60 - Step 4: Simplify right side
18,213,822.40x = 187,558,322,016,549.09 - Step 5: Solve for x
x = 187,558,322,016,549.09/18,213,822.40 - Step 6: Final answer
x = 10,297,581.58
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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.