Finding the Fourth Proportional to 20,878,657.50, 28,812,488.49 and 11,587,630.26
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Solution
The fourth proportional to 20,878,657.50, 28,812,488.49 and 11,587,630.26 is: 15,990,897.09
Step by Step Solution
- Step 1: Write the proportion equation
20,878,657.50 : 28,812,488.49 = 11,587,630.26 : x - Step 2: Convert to fraction form
20,878,657.50/28,812,488.49 = 11,587,630.26/x - Step 3: Cross multiply
20,878,657.50x = 28,812,488.49 × 11,587,630.26 - Step 4: Simplify right side
20,878,657.50x = 333,868,463,492,625.69 - Step 5: Solve for x
x = 333,868,463,492,625.69/20,878,657.50 - Step 6: Final answer
x = 15,990,897.09
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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.