Finding the Fourth Proportional to 15,320,921.06, 21,142,698.87 and 8,351,445.99
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Solution
The fourth proportional to 15,320,921.06, 21,142,698.87 and 8,351,445.99 is: 11,524,901.61
Step by Step Solution
- Step 1: Write the proportion equation
15,320,921.06 : 21,142,698.87 = 8,351,445.99 : x - Step 2: Convert to fraction form
15,320,921.06/21,142,698.87 = 8,351,445.99/x - Step 3: Cross multiply
15,320,921.06x = 21,142,698.87 × 8,351,445.99 - Step 4: Simplify right side
15,320,921.06x = 176,572,107,806,242.09 - Step 5: Solve for x
x = 176,572,107,806,242.09/15,320,921.06 - Step 6: Final answer
x = 11,524,901.61
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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.