Finding the Fourth Proportional to 13,347.68, 18,418.98 and 7,378.99
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Solution
The fourth proportional to 13,347.68, 18,418.98 and 7,378.99 is: 10,182.55
Step by Step Solution
- Step 1: Write the proportion equation
13,347.68 : 18,418.98 = 7,378.99 : x - Step 2: Convert to fraction form
13,347.68/18,418.98 = 7,378.99/x - Step 3: Cross multiply
13,347.68x = 18,418.98 × 7,378.99 - Step 4: Simplify right side
13,347.68x = 135,913,469.23 - Step 5: Solve for x
x = 135,913,469.23/13,347.68 - Step 6: Final answer
x = 10,182.55
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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.