Finding the Fourth Proportional to 13,236,397.87, 18,260,563.05 and 8,266,210.58
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Solution
The fourth proportional to 13,236,397.87, 18,260,563.05 and 8,266,210.58 is: 11,403,832.15
Step by Step Solution
- Step 1: Write the proportion equation
13,236,397.87 : 18,260,563.05 = 8,266,210.58 : x - Step 2: Convert to fraction form
13,236,397.87/18,260,563.05 = 8,266,210.58/x - Step 3: Cross multiply
13,236,397.87x = 18,260,563.05 × 8,266,210.58 - Step 4: Simplify right side
13,236,397.87x = 150,945,659,526,318.47 - Step 5: Solve for x
x = 150,945,659,526,318.47/13,236,397.87 - Step 6: Final answer
x = 11,403,832.15
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1.5x scale
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.