Finding the Fourth Proportional to 11,508,457.68, 15,881,638.80 and 6,351,782.20
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Solution
The fourth proportional to 11,508,457.68, 15,881,638.80 and 6,351,782.20 is: 8,765,441.33
Step by Step Solution
- Step 1: Write the proportion equation
11,508,457.68 : 15,881,638.80 = 6,351,782.20 : x - Step 2: Convert to fraction form
11,508,457.68/15,881,638.80 = 6,351,782.20/x - Step 3: Cross multiply
11,508,457.68x = 15,881,638.80 × 6,351,782.20 - Step 4: Simplify right side
11,508,457.68x = 100,876,710,636,669.38 - Step 5: Solve for x
x = 100,876,710,636,669.38/11,508,457.68 - Step 6: Final answer
x = 8,765,441.33
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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.