Finding the Fourth Proportional to 13,310,201.71, 18,368,078.34 and 7,198,630.21
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Solution
The fourth proportional to 13,310,201.71, 18,368,078.34 and 7,198,630.21 is: 9,934,109.68
Step by Step Solution
- Step 1: Write the proportion equation
13,310,201.71 : 18,368,078.34 = 7,198,630.21 : x - Step 2: Convert to fraction form
13,310,201.71/18,368,078.34 = 7,198,630.21/x - Step 3: Cross multiply
13,310,201.71x = 18,368,078.34 × 7,198,630.21 - Step 4: Simplify right side
13,310,201.71x = 132,225,003,637,970.66 - Step 5: Solve for x
x = 132,225,003,637,970.66/13,310,201.71 - Step 6: Final answer
x = 9,934,109.68
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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.