Finding the Fourth Proportional to 18,864,138.40, 28,277,545.20 and 9,271,664.80
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Solution
The fourth proportional to 18,864,138.40, 28,277,545.20 and 9,271,664.80 is: 13,898,324.69
Step by Step Solution
- Step 1: Write the proportion equation
18,864,138.40 : 28,277,545.20 = 9,271,664.80 : x - Step 2: Convert to fraction form
18,864,138.40/28,277,545.20 = 9,271,664.80/x - Step 3: Cross multiply
18,864,138.40x = 28,277,545.20 × 9,271,664.80 - Step 4: Simplify right side
18,864,138.40x = 262,179,920,461,248.97 - Step 5: Solve for x
x = 262,179,920,461,248.97/18,864,138.40 - Step 6: Final answer
x = 13,898,324.69
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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.