Finding the Fourth Proportional to 12,721,424.22, 17,555,617.62 and 6,920,239.05
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Solution
The fourth proportional to 12,721,424.22, 17,555,617.62 and 6,920,239.05 is: 9,549,958.28
Step by Step Solution
- Step 1: Write the proportion equation
12,721,424.22 : 17,555,617.62 = 6,920,239.05 : x - Step 2: Convert to fraction form
12,721,424.22/17,555,617.62 = 6,920,239.05/x - Step 3: Cross multiply
12,721,424.22x = 17,555,617.62 × 6,920,239.05 - Step 4: Simplify right side
12,721,424.22x = 121,489,070,600,792.06 - Step 5: Solve for x
x = 121,489,070,600,792.06/12,721,424.22 - Step 6: Final answer
x = 9,549,958.28
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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.