Finding the Fourth Proportional to 18,106.99, 27,164.58 and 6,420.21
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Solution
The fourth proportional to 18,106.99, 27,164.58 and 6,420.21 is: 9,631.77
Step by Step Solution
- Step 1: Write the proportion equation
18,106.99 : 27,164.58 = 6,420.21 : x - Step 2: Convert to fraction form
18,106.99/27,164.58 = 6,420.21/x - Step 3: Cross multiply
18,106.99x = 27,164.58 × 6,420.21 - Step 4: Simplify right side
18,106.99x = 174,402,371.13 - Step 5: Solve for x
x = 174,402,371.13/18,106.99 - Step 6: Final answer
x = 9,631.77
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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.