Finding the Fourth Proportional to 18,128,437.20, 27,192,655.80 and 7,346,089.80
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Solution
The fourth proportional to 18,128,437.20, 27,192,655.80 and 7,346,089.80 is: 11,019,134.70
Step by Step Solution
- Step 1: Write the proportion equation
18,128,437.20 : 27,192,655.80 = 7,346,089.80 : x - Step 2: Convert to fraction form
18,128,437.20/27,192,655.80 = 7,346,089.80/x - Step 3: Cross multiply
18,128,437.20x = 27,192,655.80 × 7,346,089.80 - Step 4: Simplify right side
18,128,437.20x = 199,759,691,407,290.84 - Step 5: Solve for x
x = 199,759,691,407,290.84/18,128,437.20 - Step 6: Final answer
x = 11,019,134.70
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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.