Finding the Fourth Proportional to 19,139.58, 26,412 and 11,186.16
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Solution
The fourth proportional to 19,139.58, 26,412 and 11,186.16 is: 15,436.54
Step by Step Solution
- Step 1: Write the proportion equation
19,139.58 : 26,412 = 11,186.16 : x - Step 2: Convert to fraction form
19,139.58/26,412 = 11,186.16/x - Step 3: Cross multiply
19,139.58x = 26,412 × 11,186.16 - Step 4: Simplify right side
19,139.58x = 295,448,857.92 - Step 5: Solve for x
x = 295,448,857.92/19,139.58 - Step 6: Final answer
x = 15,436.54
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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.