Finding the Fourth Proportional to 13,750.11, 18,975.21 and 7,462.53
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Solution
The fourth proportional to 13,750.11, 18,975.21 and 7,462.53 is: 10,298.32
Step by Step Solution
- Step 1: Write the proportion equation
13,750.11 : 18,975.21 = 7,462.53 : x - Step 2: Convert to fraction form
13,750.11/18,975.21 = 7,462.53/x - Step 3: Cross multiply
13,750.11x = 18,975.21 × 7,462.53 - Step 4: Simplify right side
13,750.11x = 141,603,073.88 - Step 5: Solve for x
x = 141,603,073.88/13,750.11 - Step 6: Final answer
x = 10,298.32
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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.