Finding the Fourth Proportional to 28,884,738.70, 39,865,217.62 and 18,289,113.41
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Solution
The fourth proportional to 28,884,738.70, 39,865,217.62 and 18,289,113.41 is: 25,241,685.36
Step by Step Solution
- Step 1: Write the proportion equation
28,884,738.70 : 39,865,217.62 = 18,289,113.41 : x - Step 2: Convert to fraction form
28,884,738.70/39,865,217.62 = 18,289,113.41/x - Step 3: Cross multiply
28,884,738.70x = 39,865,217.62 × 18,289,113.41 - Step 4: Simplify right side
28,884,738.70x = 729,099,485,875,738.75 - Step 5: Solve for x
x = 729,099,485,875,738.75/28,884,738.70 - Step 6: Final answer
x = 25,241,685.36
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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.