Finding the Fourth Proportional to 12,168,972.91, 18,255,895.12 and 4,492,664.40
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Solution
The fourth proportional to 12,168,972.91, 18,255,895.12 and 4,492,664.40 is: 6,739,895.86
Step by Step Solution
- Step 1: Write the proportion equation
12,168,972.91 : 18,255,895.12 = 4,492,664.40 : x - Step 2: Convert to fraction form
12,168,972.91/18,255,895.12 = 4,492,664.40/x - Step 3: Cross multiply
12,168,972.91x = 18,255,895.12 × 4,492,664.40 - Step 4: Simplify right side
12,168,972.91x = 82,017,610,169,833.16 - Step 5: Solve for x
x = 82,017,610,169,833.16/12,168,972.91 - Step 6: Final answer
x = 6,739,895.86
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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.