Finding the Fourth Proportional to 18,937.70, 26,135.97 and 11,386.49
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Solution
The fourth proportional to 18,937.70, 26,135.97 and 11,386.49 is: 15,714.53
Step by Step Solution
- Step 1: Write the proportion equation
18,937.70 : 26,135.97 = 11,386.49 : x - Step 2: Convert to fraction form
18,937.70/26,135.97 = 11,386.49/x - Step 3: Cross multiply
18,937.70x = 26,135.97 × 11,386.49 - Step 4: Simplify right side
18,937.70x = 297,596,961.05 - Step 5: Solve for x
x = 297,596,961.05/18,937.70 - Step 6: Final answer
x = 15,714.53
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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.