Finding the Fourth Proportional to 13,278.08, 18,324.08 and 7,309.19
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Solution
The fourth proportional to 13,278.08, 18,324.08 and 7,309.19 is: 10,086.86
Step by Step Solution
- Step 1: Write the proportion equation
13,278.08 : 18,324.08 = 7,309.19 : x - Step 2: Convert to fraction form
13,278.08/18,324.08 = 7,309.19/x - Step 3: Cross multiply
13,278.08x = 18,324.08 × 7,309.19 - Step 4: Simplify right side
13,278.08x = 133,934,054.13 - Step 5: Solve for x
x = 133,934,054.13/13,278.08 - Step 6: Final answer
x = 10,086.86
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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.