Finding the Fourth Proportional to 10,857,137.05, 14,986,207.91 and 6,989,655.13
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Solution
The fourth proportional to 10,857,137.05, 14,986,207.91 and 6,989,655.13 is: 9,647,886.41
Step by Step Solution
- Step 1: Write the proportion equation
10,857,137.05 : 14,986,207.91 = 6,989,655.13 : x - Step 2: Convert to fraction form
10,857,137.05/14,986,207.91 = 6,989,655.13/x - Step 3: Cross multiply
10,857,137.05x = 14,986,207.91 × 6,989,655.13 - Step 4: Simplify right side
10,857,137.05x = 104,748,424,962,429.80 - Step 5: Solve for x
x = 104,748,424,962,429.80/10,857,137.05 - Step 6: Final answer
x = 9,647,886.41
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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.