Finding the Fourth Proportional to 18,438,869.68, 25,444,973.24 and 10,178,754.68
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Solution
The fourth proportional to 18,438,869.68, 25,444,973.24 and 10,178,754.68 is: 14,046,313.30
Step by Step Solution
- Step 1: Write the proportion equation
18,438,869.68 : 25,444,973.24 = 10,178,754.68 : x - Step 2: Convert to fraction form
18,438,869.68/25,444,973.24 = 10,178,754.68/x - Step 3: Cross multiply
18,438,869.68x = 25,444,973.24 × 10,178,754.68 - Step 4: Simplify right side
18,438,869.68x = 258,998,140,449,124.75 - Step 5: Solve for x
x = 258,998,140,449,124.75/18,438,869.68 - Step 6: Final answer
x = 14,046,313.30
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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.