Finding the Fourth Proportional to 15,518,028.84, 21,414,886.36 and 8,995,441.68
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Solution
The fourth proportional to 15,518,028.84, 21,414,886.36 and 8,995,441.68 is: 12,413,713.32
Step by Step Solution
- Step 1: Write the proportion equation
15,518,028.84 : 21,414,886.36 = 8,995,441.68 : x - Step 2: Convert to fraction form
15,518,028.84/21,414,886.36 = 8,995,441.68/x - Step 3: Cross multiply
15,518,028.84x = 21,414,886.36 × 8,995,441.68 - Step 4: Simplify right side
15,518,028.84x = 192,636,361,335,207.47 - Step 5: Solve for x
x = 192,636,361,335,207.47/15,518,028.84 - Step 6: Final answer
x = 12,413,713.32
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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.