Finding the Fourth Proportional to 15,320,866.20, 21,142,785.42 and 8,351,557.08
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Solution
The fourth proportional to 15,320,866.20, 21,142,785.42 and 8,351,557.08 is: 11,525,143.35
Step by Step Solution
- Step 1: Write the proportion equation
15,320,866.20 : 21,142,785.42 = 8,351,557.08 : x - Step 2: Convert to fraction form
15,320,866.20/21,142,785.42 = 8,351,557.08/x - Step 3: Cross multiply
15,320,866.20x = 21,142,785.42 × 8,351,557.08 - Step 4: Simplify right side
15,320,866.20x = 176,575,179,265,321.78 - Step 5: Solve for x
x = 176,575,179,265,321.78/15,320,866.20 - Step 6: Final answer
x = 11,525,143.35
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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.