Finding the Fourth Proportional to 21,135,650.24, 29,167,201.56 and 12,875,712.09
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Solution
The fourth proportional to 21,135,650.24, 29,167,201.56 and 12,875,712.09 is: 17,768,485.26
Step by Step Solution
- Step 1: Write the proportion equation
21,135,650.24 : 29,167,201.56 = 12,875,712.09 : x - Step 2: Convert to fraction form
21,135,650.24/29,167,201.56 = 12,875,712.09/x - Step 3: Cross multiply
21,135,650.24x = 29,167,201.56 × 12,875,712.09 - Step 4: Simplify right side
21,135,650.24x = 375,548,489,757,558.81 - Step 5: Solve for x
x = 375,548,489,757,558.81/21,135,650.24 - Step 6: Final answer
x = 17,768,485.26
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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.