Finding the Fourth Proportional to 15,518,025.84, 21,414,882.21 and 8,995,438.68
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Solution
The fourth proportional to 15,518,025.84, 21,414,882.21 and 8,995,438.68 is: 12,413,709.18
Step by Step Solution
- Step 1: Write the proportion equation
15,518,025.84 : 21,414,882.21 = 8,995,438.68 : x - Step 2: Convert to fraction form
15,518,025.84/21,414,882.21 = 8,995,438.68/x - Step 3: Cross multiply
15,518,025.84x = 21,414,882.21 × 8,995,438.68 - Step 4: Simplify right side
15,518,025.84x = 192,636,259,759,477.88 - Step 5: Solve for x
x = 192,636,259,759,477.88/15,518,025.84 - Step 6: Final answer
x = 12,413,709.18
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1.5x scale
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.