Finding the Fourth Proportional to 18,121,203.70, 27,181,805.55 and 17,281,395.70
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Solution
The fourth proportional to 18,121,203.70, 27,181,805.55 and 17,281,395.70 is: 25,922,093.55
Step by Step Solution
- Step 1: Write the proportion equation
18,121,203.70 : 27,181,805.55 = 17,281,395.70 : x - Step 2: Convert to fraction form
18,121,203.70/27,181,805.55 = 17,281,395.70/x - Step 3: Cross multiply
18,121,203.70x = 27,181,805.55 × 17,281,395.70 - Step 4: Simplify right side
18,121,203.70x = 469,739,537,550,006.12 - Step 5: Solve for x
x = 469,739,537,550,006.12/18,121,203.70 - Step 6: Final answer
x = 25,922,093.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.