Finding the Fourth Proportional to 18,973,391.22, 28,459,570.14 and 5,326,650.63
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Solution
The fourth proportional to 18,973,391.22, 28,459,570.14 and 5,326,650.63 is: 7,989,830.89
Step by Step Solution
- Step 1: Write the proportion equation
18,973,391.22 : 28,459,570.14 = 5,326,650.63 : x - Step 2: Convert to fraction form
18,973,391.22/28,459,570.14 = 5,326,650.63/x - Step 3: Cross multiply
18,973,391.22x = 28,459,570.14 × 5,326,650.63 - Step 4: Simplify right side
18,973,391.22x = 151,594,187,215,760.19 - Step 5: Solve for x
x = 151,594,187,215,760.19/18,973,391.22 - Step 6: Final answer
x = 7,989,830.89
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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.