Finding the Fourth Proportional to 18,266,900, 27,397,987.86 and 8,688,364.88
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Solution
The fourth proportional to 18,266,900, 27,397,987.86 and 8,688,364.88 is: 13,031,423.81
Step by Step Solution
- Step 1: Write the proportion equation
18,266,900 : 27,397,987.86 = 8,688,364.88 : x - Step 2: Convert to fraction form
18,266,900/27,397,987.86 = 8,688,364.88/x - Step 3: Cross multiply
18,266,900x = 27,397,987.86 × 8,688,364.88 - Step 4: Simplify right side
18,266,900x = 238,043,715,505,490.38 - Step 5: Solve for x
x = 238,043,715,505,490.38/18,266,900 - Step 6: Final answer
x = 13,031,423.81
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1.5x scale
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.