Finding the Fourth Proportional to 18,390,058.35, 27,585,087.53 and 15,520,276.95
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Solution
The fourth proportional to 18,390,058.35, 27,585,087.53 and 15,520,276.95 is: 23,280,415.43
Step by Step Solution
- Step 1: Write the proportion equation
18,390,058.35 : 27,585,087.53 = 15,520,276.95 : x - Step 2: Convert to fraction form
18,390,058.35/27,585,087.53 = 15,520,276.95/x - Step 3: Cross multiply
18,390,058.35x = 27,585,087.53 × 15,520,276.95 - Step 4: Simplify right side
18,390,058.35x = 428,128,198,077,990 - Step 5: Solve for x
x = 428,128,198,077,990/18,390,058.35 - Step 6: Final answer
x = 23,280,415.43
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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.