Finding the Fourth Proportional to 11,681.74, 16,122.34 and 6,644.99
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Solution
The fourth proportional to 11,681.74, 16,122.34 and 6,644.99 is: 9,170.96
Step by Step Solution
- Step 1: Write the proportion equation
11,681.74 : 16,122.34 = 6,644.99 : x - Step 2: Convert to fraction form
11,681.74/16,122.34 = 6,644.99/x - Step 3: Cross multiply
11,681.74x = 16,122.34 × 6,644.99 - Step 4: Simplify right side
11,681.74x = 107,132,746.00 - Step 5: Solve for x
x = 107,132,746.00/11,681.74 - Step 6: Final answer
x = 9,170.96
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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.