Finding the Fourth Proportional to 21,956, 30,299.28 and 12,020
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Solution
The fourth proportional to 21,956, 30,299.28 and 12,020 is: 16,587.60
Step by Step Solution
- Step 1: Write the proportion equation
21,956 : 30,299.28 = 12,020 : x - Step 2: Convert to fraction form
21,956/30,299.28 = 12,020/x - Step 3: Cross multiply
21,956x = 30,299.28 × 12,020 - Step 4: Simplify right side
21,956x = 364,197,345.60 - Step 5: Solve for x
x = 364,197,345.60/21,956 - Step 6: Final answer
x = 16,587.60
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.