Finding the Fourth Proportional to 21,448.11, 29,599.49 and 11,889.02
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Solution
The fourth proportional to 21,448.11, 29,599.49 and 11,889.02 is: 16,407.45
Step by Step Solution
- Step 1: Write the proportion equation
21,448.11 : 29,599.49 = 11,889.02 : x - Step 2: Convert to fraction form
21,448.11/29,599.49 = 11,889.02/x - Step 3: Cross multiply
21,448.11x = 29,599.49 × 11,889.02 - Step 4: Simplify right side
21,448.11x = 351,908,765.74 - Step 5: Solve for x
x = 351,908,765.74/21,448.11 - Step 6: Final answer
x = 16,407.45
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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.