Finding the Fourth Proportional to 13,538,396.97, 18,682,878.08 and 7,343,428.21
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Solution
The fourth proportional to 13,538,396.97, 18,682,878.08 and 7,343,428.21 is: 10,133,871.40
Step by Step Solution
- Step 1: Write the proportion equation
13,538,396.97 : 18,682,878.08 = 7,343,428.21 : x - Step 2: Convert to fraction form
13,538,396.97/18,682,878.08 = 7,343,428.21/x - Step 3: Cross multiply
13,538,396.97x = 18,682,878.08 × 7,343,428.21 - Step 4: Simplify right side
13,538,396.97x = 137,196,373,908,314 - Step 5: Solve for x
x = 137,196,373,908,314/13,538,396.97 - Step 6: Final answer
x = 10,133,871.40
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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.