Finding the Fourth Proportional to 38,854.42, 53,614.05 and 21,858.09
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Solution
The fourth proportional to 38,854.42, 53,614.05 and 21,858.09 is: 30,161.32
Step by Step Solution
- Step 1: Write the proportion equation
38,854.42 : 53,614.05 = 21,858.09 : x - Step 2: Convert to fraction form
38,854.42/53,614.05 = 21,858.09/x - Step 3: Cross multiply
38,854.42x = 53,614.05 × 21,858.09 - Step 4: Simplify right side
38,854.42x = 1,171,900,730.16 - Step 5: Solve for x
x = 1,171,900,730.16/38,854.42 - Step 6: Final answer
x = 30,161.32
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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.