Finding the Fourth Proportional to 10,459.21, 15,613.57 and 8,962.31
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Solution
The fourth proportional to 10,459.21, 15,613.57 and 8,962.31 is: 13,378.99
Step by Step Solution
- Step 1: Write the proportion equation
10,459.21 : 15,613.57 = 8,962.31 : x - Step 2: Convert to fraction form
10,459.21/15,613.57 = 8,962.31/x - Step 3: Cross multiply
10,459.21x = 15,613.57 × 8,962.31 - Step 4: Simplify right side
10,459.21x = 139,933,609.74 - Step 5: Solve for x
x = 139,933,609.74/10,459.21 - Step 6: Final answer
x = 13,378.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.