Finding the Fourth Proportional to 21,067,313.63, 29,072,892.80 and 11,409,521.63
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Solution
The fourth proportional to 21,067,313.63, 29,072,892.80 and 11,409,521.63 is: 15,745,139.84
Step by Step Solution
- Step 1: Write the proportion equation
21,067,313.63 : 29,072,892.80 = 11,409,521.63 : x - Step 2: Convert to fraction form
21,067,313.63/29,072,892.80 = 11,409,521.63/x - Step 3: Cross multiply
21,067,313.63x = 29,072,892.80 × 11,409,521.63 - Step 4: Simplify right side
21,067,313.63x = 331,707,799,131,430.56 - Step 5: Solve for x
x = 331,707,799,131,430.56/21,067,313.63 - Step 6: Final answer
x = 15,745,139.84
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1.5x scale
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.