Finding the Fourth Proportional to 20,684,392.64, 31,028,707.80 and 7,915,636.88
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Solution
The fourth proportional to 20,684,392.64, 31,028,707.80 and 7,915,636.88 is: 11,874,266.17
Step by Step Solution
- Step 1: Write the proportion equation
20,684,392.64 : 31,028,707.80 = 7,915,636.88 : x - Step 2: Convert to fraction form
20,684,392.64/31,028,707.80 = 7,915,636.88/x - Step 3: Cross multiply
20,684,392.64x = 31,028,707.80 × 7,915,636.88 - Step 4: Simplify right side
20,684,392.64x = 245,611,983,800,423.66 - Step 5: Solve for x
x = 245,611,983,800,423.66/20,684,392.64 - Step 6: Final answer
x = 11,874,266.17
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.