Finding the Fourth Proportional to 18,001,028.70, 27,001,543.05 and 13,218,059.70
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Solution
The fourth proportional to 18,001,028.70, 27,001,543.05 and 13,218,059.70 is: 19,827,089.55
Step by Step Solution
- Step 1: Write the proportion equation
18,001,028.70 : 27,001,543.05 = 13,218,059.70 : x - Step 2: Convert to fraction form
18,001,028.70/27,001,543.05 = 13,218,059.70/x - Step 3: Cross multiply
18,001,028.70x = 27,001,543.05 × 13,218,059.70 - Step 4: Simplify right side
18,001,028.70x = 356,908,008,027,020.06 - Step 5: Solve for x
x = 356,908,008,027,020.06/18,001,028.70 - Step 6: Final answer
x = 19,827,089.55
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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.