Finding the Fourth Proportional to 12,687,809.67, 17,508,708.21 and 6,886,467.75
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Solution
The fourth proportional to 12,687,809.67, 17,508,708.21 and 6,886,467.75 is: 9,503,070.87
Step by Step Solution
- Step 1: Write the proportion equation
12,687,809.67 : 17,508,708.21 = 6,886,467.75 : x - Step 2: Convert to fraction form
12,687,809.67/17,508,708.21 = 6,886,467.75/x - Step 3: Cross multiply
12,687,809.67x = 17,508,708.21 × 6,886,467.75 - Step 4: Simplify right side
12,687,809.67x = 120,573,154,432,325.23 - Step 5: Solve for x
x = 120,573,154,432,325.23/12,687,809.67 - Step 6: Final answer
x = 9,503,070.87
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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.