Finding the Fourth Proportional to 15,357.26, 21,193.10 and 8,642.99
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Solution
The fourth proportional to 15,357.26, 21,193.10 and 8,642.99 is: 11,927.37
Step by Step Solution
- Step 1: Write the proportion equation
15,357.26 : 21,193.10 = 8,642.99 : x - Step 2: Convert to fraction form
15,357.26/21,193.10 = 8,642.99/x - Step 3: Cross multiply
15,357.26x = 21,193.10 × 8,642.99 - Step 4: Simplify right side
15,357.26x = 183,171,602.19 - Step 5: Solve for x
x = 183,171,602.19/15,357.26 - Step 6: Final answer
x = 11,927.37
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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.