Finding the Fourth Proportional to 21,115,239.30, 29,124,003.60 and 19,378,517.90
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Solution
The fourth proportional to 21,115,239.30, 29,124,003.60 and 19,378,517.90 is: 26,728,564.00
Step by Step Solution
- Step 1: Write the proportion equation
21,115,239.30 : 29,124,003.60 = 19,378,517.90 : x - Step 2: Convert to fraction form
21,115,239.30/29,124,003.60 = 19,378,517.90/x - Step 3: Cross multiply
21,115,239.30x = 29,124,003.60 × 19,378,517.90 - Step 4: Simplify right side
21,115,239.30x = 564,380,024,936,644.50 - Step 5: Solve for x
x = 564,380,024,936,644.50/21,115,239.30 - Step 6: Final answer
x = 26,728,564.00
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.