Finding the Fourth Proportional to 18,756,077.70, 28,134,116.55 and 11,197,805.70
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Solution
The fourth proportional to 18,756,077.70, 28,134,116.55 and 11,197,805.70 is: 16,796,708.55
Step by Step Solution
- Step 1: Write the proportion equation
18,756,077.70 : 28,134,116.55 = 11,197,805.70 : x - Step 2: Convert to fraction form
18,756,077.70/28,134,116.55 = 11,197,805.70/x - Step 3: Cross multiply
18,756,077.70x = 28,134,116.55 × 11,197,805.70 - Step 4: Simplify right side
18,756,077.70x = 315,040,370,668,054.31 - Step 5: Solve for x
x = 315,040,370,668,054.31/18,756,077.70 - Step 6: Final answer
x = 16,796,708.55
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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.