Finding the Fourth Proportional to 18,628,783.99, 25,703,324.35 and 15,659,775.48
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Solution
The fourth proportional to 18,628,783.99, 25,703,324.35 and 15,659,775.48 is: 21,606,793.47
Step by Step Solution
- Step 1: Write the proportion equation
18,628,783.99 : 25,703,324.35 = 15,659,775.48 : x - Step 2: Convert to fraction form
18,628,783.99/25,703,324.35 = 15,659,775.48/x - Step 3: Cross multiply
18,628,783.99x = 25,703,324.35 × 15,659,775.48 - Step 4: Simplify right side
18,628,783.99x = 402,508,288,358,913.06 - Step 5: Solve for x
x = 402,508,288,358,913.06/18,628,783.99 - Step 6: Final answer
x = 21,606,793.47
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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.