Finding the Fourth Proportional to 20,207,421.12, 27,886,252.34 and 10,914,991.14
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Solution
The fourth proportional to 20,207,421.12, 27,886,252.34 and 10,914,991.14 is: 15,062,693.82
Step by Step Solution
- Step 1: Write the proportion equation
20,207,421.12 : 27,886,252.34 = 10,914,991.14 : x - Step 2: Convert to fraction form
20,207,421.12/27,886,252.34 = 10,914,991.14/x - Step 3: Cross multiply
20,207,421.12x = 27,886,252.34 × 10,914,991.14 - Step 4: Simplify right side
20,207,421.12x = 304,378,197,218,904.31 - Step 5: Solve for x
x = 304,378,197,218,904.31/20,207,421.12 - Step 6: Final answer
x = 15,062,693.82
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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.