Finding the Fourth Proportional to 20,287,106.76, 27,999,078.12 and 12,554,639.40
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Solution
The fourth proportional to 20,287,106.76, 27,999,078.12 and 12,554,639.40 is: 17,327,178.96
Step by Step Solution
- Step 1: Write the proportion equation
20,287,106.76 : 27,999,078.12 = 12,554,639.40 : x - Step 2: Convert to fraction form
20,287,106.76/27,999,078.12 = 12,554,639.40/x - Step 3: Cross multiply
20,287,106.76x = 27,999,078.12 × 12,554,639.40 - Step 4: Simplify right side
20,287,106.76x = 351,518,329,329,029.94 - Step 5: Solve for x
x = 351,518,329,329,029.94/20,287,106.76 - Step 6: Final answer
x = 17,327,178.96
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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.