Finding the Fourth Proportional to 10,658,640.70, 15,987,961.05 and 7,467,370.30
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Solution
The fourth proportional to 10,658,640.70, 15,987,961.05 and 7,467,370.30 is: 11,201,055.45
Step by Step Solution
- Step 1: Write the proportion equation
10,658,640.70 : 15,987,961.05 = 7,467,370.30 : x - Step 2: Convert to fraction form
10,658,640.70/15,987,961.05 = 7,467,370.30/x - Step 3: Cross multiply
10,658,640.70x = 15,987,961.05 × 7,467,370.30 - Step 4: Simplify right side
10,658,640.70x = 119,388,025,502,326.81 - Step 5: Solve for x
x = 119,388,025,502,326.81/10,658,640.70 - Step 6: Final answer
x = 11,201,055.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.