Finding the Fourth Proportional to 12,328,991.84, 17,015,813.76 and 7,100,995.20
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Solution
The fourth proportional to 12,328,991.84, 17,015,813.76 and 7,100,995.20 is: 9,800,412.99
Step by Step Solution
- Step 1: Write the proportion equation
12,328,991.84 : 17,015,813.76 = 7,100,995.20 : x - Step 2: Convert to fraction form
12,328,991.84/17,015,813.76 = 7,100,995.20/x - Step 3: Cross multiply
12,328,991.84x = 17,015,813.76 × 7,100,995.20 - Step 4: Simplify right side
12,328,991.84x = 120,829,211,833,853.97 - Step 5: Solve for x
x = 120,829,211,833,853.97/12,328,991.84 - Step 6: Final answer
x = 9,800,412.99
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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.