Finding the Fourth Proportional to 19,988.98, 27,583.61 and 10,912.53
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Solution
The fourth proportional to 19,988.98, 27,583.61 and 10,912.53 is: 15,058.65
Step by Step Solution
- Step 1: Write the proportion equation
19,988.98 : 27,583.61 = 10,912.53 : x - Step 2: Convert to fraction form
19,988.98/27,583.61 = 10,912.53/x - Step 3: Cross multiply
19,988.98x = 27,583.61 × 10,912.53 - Step 4: Simplify right side
19,988.98x = 301,007,061.43 - Step 5: Solve for x
x = 301,007,061.43/19,988.98 - Step 6: Final answer
x = 15,058.65
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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.