Finding the Fourth Proportional to 30,689.55, 42,168.04 and 24,390.99
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Solution
The fourth proportional to 30,689.55, 42,168.04 and 24,390.99 is: 33,513.70
Step by Step Solution
- Step 1: Write the proportion equation
30,689.55 : 42,168.04 = 24,390.99 : x - Step 2: Convert to fraction form
30,689.55/42,168.04 = 24,390.99/x - Step 3: Cross multiply
30,689.55x = 42,168.04 × 24,390.99 - Step 4: Simplify right side
30,689.55x = 1,028,520,241.96 - Step 5: Solve for x
x = 1,028,520,241.96/30,689.55 - Step 6: Final answer
x = 33,513.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.