Finding the Fourth Proportional to 12,408,987.96, 18,613,715.22 and 3,889,135.80
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Solution
The fourth proportional to 12,408,987.96, 18,613,715.22 and 3,889,135.80 is: 5,833,776.81
Step by Step Solution
- Step 1: Write the proportion equation
12,408,987.96 : 18,613,715.22 = 3,889,135.80 : x - Step 2: Convert to fraction form
12,408,987.96/18,613,715.22 = 3,889,135.80/x - Step 3: Cross multiply
12,408,987.96x = 18,613,715.22 × 3,889,135.80 - Step 4: Simplify right side
12,408,987.96x = 72,391,266,233,106.88 - Step 5: Solve for x
x = 72,391,266,233,106.88/12,408,987.96 - Step 6: Final answer
x = 5,833,776.81
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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.