Finding the Fourth Proportional to 19,161.74, 28,742.75 and 6,681.74
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Solution
The fourth proportional to 19,161.74, 28,742.75 and 6,681.74 is: 10,022.65
Step by Step Solution
- Step 1: Write the proportion equation
19,161.74 : 28,742.75 = 6,681.74 : x - Step 2: Convert to fraction form
19,161.74/28,742.75 = 6,681.74/x - Step 3: Cross multiply
19,161.74x = 28,742.75 × 6,681.74 - Step 4: Simplify right side
19,161.74x = 192,051,405.26 - Step 5: Solve for x
x = 192,051,405.26/19,161.74 - Step 6: Final answer
x = 10,022.65
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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.