Finding the Fourth Proportional to 15,143,204.36, 20,897,512.84 and 8,267,686.44
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Solution
The fourth proportional to 15,143,204.36, 20,897,512.84 and 8,267,686.44 is: 11,409,347.68
Step by Step Solution
- Step 1: Write the proportion equation
15,143,204.36 : 20,897,512.84 = 8,267,686.44 : x - Step 2: Convert to fraction form
15,143,204.36/20,897,512.84 = 8,267,686.44/x - Step 3: Cross multiply
15,143,204.36x = 20,897,512.84 × 8,267,686.44 - Step 4: Simplify right side
15,143,204.36x = 172,774,083,536,993.91 - Step 5: Solve for x
x = 172,774,083,536,993.91/15,143,204.36 - Step 6: Final answer
x = 11,409,347.68
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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.