Finding the Fourth Proportional to 13,242.57, 19,863.55 and 6,666.99
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Solution
The fourth proportional to 13,242.57, 19,863.55 and 6,666.99 is: 10,000.33
Step by Step Solution
- Step 1: Write the proportion equation
13,242.57 : 19,863.55 = 6,666.99 : x - Step 2: Convert to fraction form
13,242.57/19,863.55 = 6,666.99/x - Step 3: Cross multiply
13,242.57x = 19,863.55 × 6,666.99 - Step 4: Simplify right side
13,242.57x = 132,430,089.21 - Step 5: Solve for x
x = 132,430,089.21/13,242.57 - Step 6: Final answer
x = 10,000.33
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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.