Finding the Fourth Proportional to 18,684,488.40, 28,013,281.68 and 11,481,139.56
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Solution
The fourth proportional to 18,684,488.40, 28,013,281.68 and 11,481,139.56 is: 17,213,444.09
Step by Step Solution
- Step 1: Write the proportion equation
18,684,488.40 : 28,013,281.68 = 11,481,139.56 : x - Step 2: Convert to fraction form
18,684,488.40/28,013,281.68 = 11,481,139.56/x - Step 3: Cross multiply
18,684,488.40x = 28,013,281.68 × 11,481,139.56 - Step 4: Simplify right side
18,684,488.40x = 321,624,396,501,671.25 - Step 5: Solve for x
x = 321,624,396,501,671.25/18,684,488.40 - Step 6: Final answer
x = 17,213,444.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.