Finding the Fourth Proportional to 18,457,421.70, 27,686,132.55 and 18,457,421.70
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Solution
The fourth proportional to 18,457,421.70, 27,686,132.55 and 18,457,421.70 is: 27,686,132.55
Step by Step Solution
- Step 1: Write the proportion equation
18,457,421.70 : 27,686,132.55 = 18,457,421.70 : x - Step 2: Convert to fraction form
18,457,421.70/27,686,132.55 = 18,457,421.70/x - Step 3: Cross multiply
18,457,421.70x = 27,686,132.55 × 18,457,421.70 - Step 4: Simplify right side
18,457,421.70x = 511,014,623,717,446.31 - Step 5: Solve for x
x = 511,014,623,717,446.31/18,457,421.70 - Step 6: Final answer
x = 27,686,132.55
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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.