Finding the Fourth Proportional to 22,921.55, 31,631.85 and 13,368.07
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Solution
The fourth proportional to 22,921.55, 31,631.85 and 13,368.07 is: 18,447.99
Step by Step Solution
- Step 1: Write the proportion equation
22,921.55 : 31,631.85 = 13,368.07 : x - Step 2: Convert to fraction form
22,921.55/31,631.85 = 13,368.07/x - Step 3: Cross multiply
22,921.55x = 31,631.85 × 13,368.07 - Step 4: Simplify right side
22,921.55x = 422,856,626.87 - Step 5: Solve for x
x = 422,856,626.87/22,921.55 - Step 6: Final answer
x = 18,447.99
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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.