Finding the Fourth Proportional to 20,241,971.70, 27,934,587.09 and 11,074,404.66
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Solution
The fourth proportional to 20,241,971.70, 27,934,587.09 and 11,074,404.66 is: 15,283,042.88
Step by Step Solution
- Step 1: Write the proportion equation
20,241,971.70 : 27,934,587.09 = 11,074,404.66 : x - Step 2: Convert to fraction form
20,241,971.70/27,934,587.09 = 11,074,404.66/x - Step 3: Cross multiply
20,241,971.70x = 27,934,587.09 × 11,074,404.66 - Step 4: Simplify right side
20,241,971.70x = 309,358,921,444,671.81 - Step 5: Solve for x
x = 309,358,921,444,671.81/20,241,971.70 - Step 6: Final answer
x = 15,283,042.88
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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.