Finding the Fourth Proportional to 18,640,292.08, 25,710,352.34 and 12,442,213.80
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Solution
The fourth proportional to 18,640,292.08, 25,710,352.34 and 12,442,213.80 is: 17,161,410.31
Step by Step Solution
- Step 1: Write the proportion equation
18,640,292.08 : 25,710,352.34 = 12,442,213.80 : x - Step 2: Convert to fraction form
18,640,292.08/25,710,352.34 = 12,442,213.80/x - Step 3: Cross multiply
18,640,292.08x = 25,710,352.34 × 12,442,213.80 - Step 4: Simplify right side
18,640,292.08x = 319,893,700,687,610.31 - Step 5: Solve for x
x = 319,893,700,687,610.31/18,640,292.08 - Step 6: Final answer
x = 17,161,410.31
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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.