Finding the Fourth Proportional to 13,247,025.21, 18,278,215.17 and 7,739,335.88
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Solution
The fourth proportional to 13,247,025.21, 18,278,215.17 and 7,739,335.88 is: 10,678,717.99
Step by Step Solution
- Step 1: Write the proportion equation
13,247,025.21 : 18,278,215.17 = 7,739,335.88 : x - Step 2: Convert to fraction form
13,247,025.21/18,278,215.17 = 7,739,335.88/x - Step 3: Cross multiply
13,247,025.21x = 18,278,215.17 × 7,739,335.88 - Step 4: Simplify right side
13,247,025.21x = 141,461,246,487,541.31 - Step 5: Solve for x
x = 141,461,246,487,541.31/13,247,025.21 - Step 6: Final answer
x = 10,678,717.99
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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.