Finding the Fourth Proportional to 21,117,480.48, 29,127,068.64 and 19,380,747.96
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Solution
The fourth proportional to 21,117,480.48, 29,127,068.64 and 19,380,747.96 is: 26,731,615.86
Step by Step Solution
- Step 1: Write the proportion equation
21,117,480.48 : 29,127,068.64 = 19,380,747.96 : x - Step 2: Convert to fraction form
21,117,480.48/29,127,068.64 = 19,380,747.96/x - Step 3: Cross multiply
21,117,480.48x = 29,127,068.64 × 19,380,747.96 - Step 4: Simplify right side
21,117,480.48x = 564,504,376,125,460 - Step 5: Solve for x
x = 564,504,376,125,460/21,117,480.48 - Step 6: Final answer
x = 26,731,615.86
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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.