Finding the Fourth Proportional to 28,485,728.78, 39,310,252.53 and 15,433,312.10
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Solution
The fourth proportional to 28,485,728.78, 39,310,252.53 and 15,433,312.10 is: 21,297,941.88
Step by Step Solution
- Step 1: Write the proportion equation
28,485,728.78 : 39,310,252.53 = 15,433,312.10 : x - Step 2: Convert to fraction form
28,485,728.78/39,310,252.53 = 15,433,312.10/x - Step 3: Cross multiply
28,485,728.78x = 39,310,252.53 × 15,433,312.10 - Step 4: Simplify right side
28,485,728.78x = 606,687,396,025,304.62 - Step 5: Solve for x
x = 606,687,396,025,304.62/28,485,728.78 - Step 6: Final answer
x = 21,297,941.88
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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.