Finding the Fourth Proportional to 19,721.03, 27,214.99 and 12,647.44
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Solution
The fourth proportional to 19,721.03, 27,214.99 and 12,647.44 is: 17,453.45
Step by Step Solution
- Step 1: Write the proportion equation
19,721.03 : 27,214.99 = 12,647.44 : x - Step 2: Convert to fraction form
19,721.03/27,214.99 = 12,647.44/x - Step 3: Cross multiply
19,721.03x = 27,214.99 × 12,647.44 - Step 4: Simplify right side
19,721.03x = 344,199,953.13 - Step 5: Solve for x
x = 344,199,953.13/19,721.03 - Step 6: Final answer
x = 17,453.45
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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.