Finding the Fourth Proportional to 26,428.99, 39,643.49 and 7,960.99
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Solution
The fourth proportional to 26,428.99, 39,643.49 and 7,960.99 is: 11,941.49
Step by Step Solution
- Step 1: Write the proportion equation
26,428.99 : 39,643.49 = 7,960.99 : x - Step 2: Convert to fraction form
26,428.99/39,643.49 = 7,960.99/x - Step 3: Cross multiply
26,428.99x = 39,643.49 × 7,960.99 - Step 4: Simplify right side
26,428.99x = 315,601,427.46 - Step 5: Solve for x
x = 315,601,427.46/26,428.99 - Step 6: Final answer
x = 11,941.49
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.