Finding the Fourth Proportional to 18,959.78, 26,160.48 and 11,000.99
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Solution
The fourth proportional to 18,959.78, 26,160.48 and 11,000.99 is: 15,179.03
Step by Step Solution
- Step 1: Write the proportion equation
18,959.78 : 26,160.48 = 11,000.99 : x - Step 2: Convert to fraction form
18,959.78/26,160.48 = 11,000.99/x - Step 3: Cross multiply
18,959.78x = 26,160.48 × 11,000.99 - Step 4: Simplify right side
18,959.78x = 287,791,048.07 - Step 5: Solve for x
x = 287,791,048.07/18,959.78 - Step 6: Final answer
x = 15,179.03
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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.