Finding the Fourth Proportional to 12,687,612.61, 17,508,861.12 and 6,886,394.05
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Solution
The fourth proportional to 12,687,612.61, 17,508,861.12 and 6,886,394.05 is: 9,503,199.75
Step by Step Solution
- Step 1: Write the proportion equation
12,687,612.61 : 17,508,861.12 = 6,886,394.05 : x - Step 2: Convert to fraction form
12,687,612.61/17,508,861.12 = 6,886,394.05/x - Step 3: Cross multiply
12,687,612.61x = 17,508,861.12 × 6,886,394.05 - Step 4: Simplify right side
12,687,612.61x = 120,572,917,039,044.34 - Step 5: Solve for x
x = 120,572,917,039,044.34/12,687,612.61 - Step 6: Final answer
x = 9,503,199.75
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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.