Finding the Fourth Proportional to 19,791.84, 27,312.68 and 11,177.09
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Solution
The fourth proportional to 19,791.84, 27,312.68 and 11,177.09 is: 15,424.34
Step by Step Solution
- Step 1: Write the proportion equation
19,791.84 : 27,312.68 = 11,177.09 : x - Step 2: Convert to fraction form
19,791.84/27,312.68 = 11,177.09/x - Step 3: Cross multiply
19,791.84x = 27,312.68 × 11,177.09 - Step 4: Simplify right side
19,791.84x = 305,276,090.05 - Step 5: Solve for x
x = 305,276,090.05/19,791.84 - Step 6: Final answer
x = 15,424.34
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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.