Finding the Fourth Proportional to 21,470,786.64, 29,618,392.77 and 12,762,765
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Solution
The fourth proportional to 21,470,786.64, 29,618,392.77 and 12,762,765 is: 17,605,902.99
Step by Step Solution
- Step 1: Write the proportion equation
21,470,786.64 : 29,618,392.77 = 12,762,765 : x - Step 2: Convert to fraction form
21,470,786.64/29,618,392.77 = 12,762,765/x - Step 3: Cross multiply
21,470,786.64x = 29,618,392.77 × 12,762,765 - Step 4: Simplify right side
21,470,786.64x = 378,012,586,601,209.06 - Step 5: Solve for x
x = 378,012,586,601,209.06/21,470,786.64 - Step 6: Final answer
x = 17,605,902.99
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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.