Finding the Fourth Proportional to 15,004,453.42, 20,706,245.12 and 8,128,935.48
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Solution
The fourth proportional to 15,004,453.42, 20,706,245.12 and 8,128,935.48 is: 11,217,984.81
Step by Step Solution
- Step 1: Write the proportion equation
15,004,453.42 : 20,706,245.12 = 8,128,935.48 : x - Step 2: Convert to fraction form
15,004,453.42/20,706,245.12 = 8,128,935.48/x - Step 3: Cross multiply
15,004,453.42x = 20,706,245.12 × 8,128,935.48 - Step 4: Simplify right side
15,004,453.42x = 168,319,730,613,544.88 - Step 5: Solve for x
x = 168,319,730,613,544.88/15,004,453.42 - Step 6: Final answer
x = 11,217,984.81
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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.