Finding the Fourth Proportional to 13,286,908.85, 18,335,934.11 and 7,175,336.81
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Solution
The fourth proportional to 13,286,908.85, 18,335,934.11 and 7,175,336.81 is: 9,901,964.74
Step by Step Solution
- Step 1: Write the proportion equation
13,286,908.85 : 18,335,934.11 = 7,175,336.81 : x - Step 2: Convert to fraction form
13,286,908.85/18,335,934.11 = 7,175,336.81/x - Step 3: Cross multiply
13,286,908.85x = 18,335,934.11 × 7,175,336.81 - Step 4: Simplify right side
13,286,908.85x = 131,566,502,929,340.91 - Step 5: Solve for x
x = 131,566,502,929,340.91/13,286,908.85 - Step 6: Final answer
x = 9,901,964.74
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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.