Finding the Fourth Proportional to 13,490,389.62, 18,622,816.92 and 8,602,182.18
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Solution
The fourth proportional to 13,490,389.62, 18,622,816.92 and 8,602,182.18 is: 11,874,887.85
Step by Step Solution
- Step 1: Write the proportion equation
13,490,389.62 : 18,622,816.92 = 8,602,182.18 : x - Step 2: Convert to fraction form
13,490,389.62/18,622,816.92 = 8,602,182.18/x - Step 3: Cross multiply
13,490,389.62x = 18,622,816.92 × 8,602,182.18 - Step 4: Simplify right side
13,490,389.62x = 160,196,863,850,626.50 - Step 5: Solve for x
x = 160,196,863,850,626.50/13,490,389.62 - Step 6: Final answer
x = 11,874,887.85
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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.