Finding the Fourth Proportional to 20,717,809.92, 28,596,091.68 and 12,238,378.08
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Solution
The fourth proportional to 20,717,809.92, 28,596,091.68 and 12,238,378.08 is: 16,892,218.96
Step by Step Solution
- Step 1: Write the proportion equation
20,717,809.92 : 28,596,091.68 = 12,238,378.08 : x - Step 2: Convert to fraction form
20,717,809.92/28,596,091.68 = 12,238,378.08/x - Step 3: Cross multiply
20,717,809.92x = 28,596,091.68 × 12,238,378.08 - Step 4: Simplify right side
20,717,809.92x = 349,969,781,590,182.38 - Step 5: Solve for x
x = 349,969,781,590,182.38/20,717,809.92 - Step 6: Final answer
x = 16,892,218.96
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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.