Finding the Fourth Proportional to 21,246.36, 29,318.90 and 11,813.08
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Solution
The fourth proportional to 21,246.36, 29,318.90 and 11,813.08 is: 16,301.45
Step by Step Solution
- Step 1: Write the proportion equation
21,246.36 : 29,318.90 = 11,813.08 : x - Step 2: Convert to fraction form
21,246.36/29,318.90 = 11,813.08/x - Step 3: Cross multiply
21,246.36x = 29,318.90 × 11,813.08 - Step 4: Simplify right side
21,246.36x = 346,346,511.21 - Step 5: Solve for x
x = 346,346,511.21/21,246.36 - Step 6: Final answer
x = 16,301.45
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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.