Finding the Fourth Proportional to 13,338,675.66, 18,405,280.08 and 7,758,156.99
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Solution
The fourth proportional to 13,338,675.66, 18,405,280.08 and 7,758,156.99 is: 10,705,039.69
Step by Step Solution
- Step 1: Write the proportion equation
13,338,675.66 : 18,405,280.08 = 7,758,156.99 : x - Step 2: Convert to fraction form
13,338,675.66/18,405,280.08 = 7,758,156.99/x - Step 3: Cross multiply
13,338,675.66x = 18,405,280.08 × 7,758,156.99 - Step 4: Simplify right side
13,338,675.66x = 142,791,052,305,559.75 - Step 5: Solve for x
x = 142,791,052,305,559.75/13,338,675.66 - Step 6: Final answer
x = 10,705,039.69
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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.