Finding the Fourth Proportional to 18,661,032.05, 25,740,202.55 and 12,381,423.45
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Solution
The fourth proportional to 18,661,032.05, 25,740,202.55 and 12,381,423.45 is: 17,078,388.09
Step by Step Solution
- Step 1: Write the proportion equation
18,661,032.05 : 25,740,202.55 = 12,381,423.45 : x - Step 2: Convert to fraction form
18,661,032.05/25,740,202.55 = 12,381,423.45/x - Step 3: Cross multiply
18,661,032.05x = 25,740,202.55 × 12,381,423.45 - Step 4: Simplify right side
18,661,032.05x = 318,700,347,398,412.69 - Step 5: Solve for x
x = 318,700,347,398,412.69/18,661,032.05 - Step 6: Final answer
x = 17,078,388.09
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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.