Finding the Fourth Proportional to 18,398,315.35, 25,389,845.28 and 10,138,673.21
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Solution
The fourth proportional to 18,398,315.35, 25,389,845.28 and 10,138,673.21 is: 13,991,462.76
Step by Step Solution
- Step 1: Write the proportion equation
18,398,315.35 : 25,389,845.28 = 10,138,673.21 : x - Step 2: Convert to fraction form
18,398,315.35/25,389,845.28 = 10,138,673.21/x - Step 3: Cross multiply
18,398,315.35x = 25,389,845.28 × 10,138,673.21 - Step 4: Simplify right side
18,398,315.35x = 257,419,344,019,431.75 - Step 5: Solve for x
x = 257,419,344,019,431.75/18,398,315.35 - Step 6: Final answer
x = 13,991,462.76
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1.5x scale
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.