Finding the Fourth Proportional to 13,618,760.04, 18,795,012.39 and 7,818,661.08
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Solution
The fourth proportional to 13,618,760.04, 18,795,012.39 and 7,818,661.08 is: 10,790,397.32
Step by Step Solution
- Step 1: Write the proportion equation
13,618,760.04 : 18,795,012.39 = 7,818,661.08 : x - Step 2: Convert to fraction form
13,618,760.04/18,795,012.39 = 7,818,661.08/x - Step 3: Cross multiply
13,618,760.04x = 18,795,012.39 × 7,818,661.08 - Step 4: Simplify right side
13,618,760.04x = 146,951,831,871,810.78 - Step 5: Solve for x
x = 146,951,831,871,810.78/13,618,760.04 - Step 6: Final answer
x = 10,790,397.32
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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.