Finding the Fourth Proportional to 18,453,028.70, 27,679,543.05 and 7,666,744.70
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Solution
The fourth proportional to 18,453,028.70, 27,679,543.05 and 7,666,744.70 is: 11,500,117.05
Step by Step Solution
- Step 1: Write the proportion equation
18,453,028.70 : 27,679,543.05 = 7,666,744.70 : x - Step 2: Convert to fraction form
18,453,028.70/27,679,543.05 = 7,666,744.70/x - Step 3: Cross multiply
18,453,028.70x = 27,679,543.05 × 7,666,744.70 - Step 4: Simplify right side
18,453,028.70x = 212,211,989,977,009.34 - Step 5: Solve for x
x = 212,211,989,977,009.34/18,453,028.70 - Step 6: Final answer
x = 11,500,117.05
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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.