Finding the Fourth Proportional to 18,970.08, 26,163.91 and 12,164.75
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Solution
The fourth proportional to 18,970.08, 26,163.91 and 12,164.75 is: 16,777.86
Step by Step Solution
- Step 1: Write the proportion equation
18,970.08 : 26,163.91 = 12,164.75 : x - Step 2: Convert to fraction form
18,970.08/26,163.91 = 12,164.75/x - Step 3: Cross multiply
18,970.08x = 26,163.91 × 12,164.75 - Step 4: Simplify right side
18,970.08x = 318,277,406.67 - Step 5: Solve for x
x = 318,277,406.67/18,970.08 - Step 6: Final answer
x = 16,777.86
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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.