Finding the Fourth Proportional to 18,757,659.36, 28,121,790.28 and 7,406,604.48
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Solution
The fourth proportional to 18,757,659.36, 28,121,790.28 and 7,406,604.48 is: 11,104,102.80
Step by Step Solution
- Step 1: Write the proportion equation
18,757,659.36 : 28,121,790.28 = 7,406,604.48 : x - Step 2: Convert to fraction form
18,757,659.36/28,121,790.28 = 7,406,604.48/x - Step 3: Cross multiply
18,757,659.36x = 28,121,790.28 × 7,406,604.48 - Step 4: Simplify right side
18,757,659.36x = 208,286,977,873,468.47 - Step 5: Solve for x
x = 208,286,977,873,468.47/18,757,659.36 - Step 6: Final answer
x = 11,104,102.80
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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.