Finding the Fourth Proportional to 11,457,957.31, 15,853,618.41 and 9,990,924.99
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Solution
The fourth proportional to 11,457,957.31, 15,853,618.41 and 9,990,924.99 is: 13,823,782.72
Step by Step Solution
- Step 1: Write the proportion equation
11,457,957.31 : 15,853,618.41 = 9,990,924.99 : x - Step 2: Convert to fraction form
11,457,957.31/15,853,618.41 = 9,990,924.99/x - Step 3: Cross multiply
11,457,957.31x = 15,853,618.41 × 9,990,924.99 - Step 4: Simplify right side
11,457,957.31x = 158,392,312,225,170.34 - Step 5: Solve for x
x = 158,392,312,225,170.34/11,457,957.31 - Step 6: Final answer
x = 13,823,782.72
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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.