Finding the Fourth Proportional to 28,545,615.18, 39,392,987.88 and 15,492,874.20
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Solution
The fourth proportional to 28,545,615.18, 39,392,987.88 and 15,492,874.20 is: 21,380,187.53
Step by Step Solution
- Step 1: Write the proportion equation
28,545,615.18 : 39,392,987.88 = 15,492,874.20 : x - Step 2: Convert to fraction form
28,545,615.18/39,392,987.88 = 15,492,874.20/x - Step 3: Cross multiply
28,545,615.18x = 39,392,987.88 × 15,492,874.20 - Step 4: Simplify right side
28,545,615.18x = 610,310,605,586,964.75 - Step 5: Solve for x
x = 610,310,605,586,964.75/28,545,615.18 - Step 6: Final answer
x = 21,380,187.53
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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.